Best KPV vendors in 2026
Buying KPV: what the field looks like
We track 56 in-stock KPV listings across 37 US retail vendors, and re-read every one of them each night. Ranking below is by cost per milligram, which is the only figure that compares a 5mg vial against a 10mg one honestly.
The cheapest source works out at $1.70/mg against a median of $4.93/mg across the field — 65% less for the same milligram of the same compound. That gap is why this page exists: on KPV the vendor you pick matters more than the size you buy.
The lowest total cart is $23.40 at hightidecompounds. That is the cheapest way to hold KPV at all, which is a different question from the best cost per milligram — the two are the same vendor only sometimes.
Top 5 KPV vendors at a glance
| # | Vendor | Size | Cheapest vial | Per mg | vs median | Score | |
|---|---|---|---|---|---|---|---|
| 1 | hightidecompounds | 30mg | $51.00 | $1.70 | 65% under | 4.2/10 | View → |
| 2 | evolvebiopep | 10mg | $24.99 | $2.50 | 49% under | 6.8/10 | View → |
| 3 | rescueresearchusa | 30mg | $79.99 | $2.67 | 46% under | 3.5/10 | View → |
| 4 | aurora-peptides | 30mg | $80.00 | $2.67 | 46% under | 5.7/10 | View → |
| 5 | pepvidalabs | 16mg | $43.75 | $2.73 | 44% under | 6.7/10 | View → |
All 37 ranked KPV vendors
hightidecompounds
30mg$51.00$1.70/mg4.2/10Get deal →Prices sit in the 69th percentile of each compound's field — cheaper than 31% of listings. · Cheapest source we track on 8 compounds. · 22 compounds, 120 live listings. · 100% of listings in stock at the last check. · Certificates published on 3% of listings, newest 5 months old. · Tracked for 2 days.
evolvebiopep
10mg$24.99$2.50/mg6.8/10Get deal →Prices sit in the 13th percentile of each compound's field — cheaper than 87% of listings. · Cheapest source we track on 11 compounds. · 34 compounds, 44 live listings. · 98% of listings in stock at the last check. · No certificates published that we could find. · Tracked for 2 days.
rescueresearchusa
30mg$79.99$2.67/mg3.5/10Get deal →Prices sit in the 54th percentile of each compound's field — cheaper than 46% of listings. · 10 compounds, 10 live listings. · 63% of listings in stock at the last check. · No certificates published that we could find. · Tracked for 2 days.
aurora-peptides
30mg$80.00$2.67/mg5.7/10Get deal →Prices sit in the 20th percentile of each compound's field — cheaper than 80% of listings. · Cheapest source we track on 1 compound. · 14 compounds, 18 live listings. · 100% of listings in stock at the last check. · No certificates published that we could find. · Tracked for 2 days.
pepvidalabs
16mg$43.75$2.73/mg6.7/10Get deal →Prices sit in the 34th percentile of each compound's field — cheaper than 66% of listings. · 17 compounds, 20 live listings. · 77% of listings in stock at the last check. · Certificates published on 100% of listings, newest 5 months old. · Tracked for 2 days.
s1research
10mg$30.00$3.00/mg8.1/10Get deal →Prices sit in the 10th percentile of each compound's field — cheaper than 90% of listings. · Cheapest source we track on 3 compounds. · 18 compounds, 27 live listings. · 96% of listings in stock at the last check. · Certificates published on 100% of listings, newest 2 months old. · Tracked for 2 days.
peptideplugs
30mg$90.00$3.00/mg5.6/10Get deal →Prices sit in the 41th percentile of each compound's field — cheaper than 59% of listings. · Cheapest source we track on 2 compounds. · 36 compounds, 41 live listings. · 91% of listings in stock at the last check. · No certificates published that we could find. · Tracked for 2 days.
ignitepeptides
10mg$30.00$3.00/mg5.8/10Get deal →Prices sit in the 64th percentile of each compound's field — cheaper than 36% of listings. · 19 compounds, 22 live listings. · 85% of listings in stock at the last check. · Certificates published on 100% of listings, newest 3 months old. · Tracked for 2 days.
ionpeptide
20mg$69.00$3.45/mg4.5/10Get deal →Prices sit in the 48th percentile of each compound's field — cheaper than 52% of listings. · Cheapest source we track on 1 compound. · 18 compounds, 41 live listings. · 85% of listings in stock at the last check. · No certificates published that we could find. · Tracked for 2 days.
puratekpeptides
10mg$34.95$3.50/mg6.0/10Get deal →Prices sit in the 26th percentile of each compound's field — cheaper than 74% of listings. · 28 compounds, 39 live listings. · 96% of listings in stock at the last check. · Certificates published on 3% of listings, newest 9 months old. · Tracked for 2 days.
goalphalabs
10mg$34.99$3.50/mgpack: 10× → $2.80/mg6.6/10Get deal →Prices sit in the 22th percentile of each compound's field — cheaper than 78% of listings. · Cheapest source we track on 12 compounds. · 39 compounds, 111 live listings. · 98% of listings in stock at the last check. · No certificates published that we could find. · Tracked for 2 days.
southernaminos
10mg$37.50$3.75/mg4.9/10Get deal →Prices sit in the 40th percentile of each compound's field — cheaper than 60% of listings. · 25 compounds, 34 live listings. · 78% of listings in stock at the last check. · No certificates published that we could find. · Tracked for 2 days.
amc-essentials
10mg$39.99$4.00/mg5.4/10Get deal →Prices sit in the 47th percentile of each compound's field — cheaper than 53% of listings. · Cheapest source we track on 3 compounds. · 35 compounds, 37 live listings. · 96% of listings in stock at the last check. · No certificates published that we could find. · Tracked for 2 days.
valorpeptides
10mg$39.99$4.00/mg5.0/10Get deal →Prices sit in the 42th percentile of each compound's field — cheaper than 58% of listings. · 21 compounds, 43 live listings. · 93% of listings in stock at the last check. · No certificates published that we could find. · Tracked for 2 days.
peptidecrafters
10mg$40.00$4.00/mg7.6/10Get deal →Prices sit in the 34th percentile of each compound's field — cheaper than 66% of listings. · 33 compounds, 34 live listings. · 87% of listings in stock at the last check. · Certificates published on 100% of listings, newest 1 months old. · Tracked for 2 days.
fusionpeptide
12mg$50.99$4.25/mg6.0/10Get deal →Prices sit in the 57th percentile of each compound's field — cheaper than 43% of listings. · Cheapest source we track on 3 compounds. · 46 compounds, 106 live listings. · 100% of listings in stock at the last check. · Certificates published on 26% of listings, newest 4 months old. · Tracked for 2 days.
ezpeptides
10mg$44.00$4.40/mg6.6/10Get deal →Prices sit in the 62th percentile of each compound's field — cheaper than 38% of listings. · 32 compounds, 37 live listings. · 96% of listings in stock at the last check. · Certificates published on 100% of listings, newest 3 months old. · Tracked for 2 days.
erospeptides
10mg$44.99$4.50/mg7.8/10Get deal →Prices sit in the 31th percentile of each compound's field — cheaper than 69% of listings. · Cheapest source we track on 7 compounds. · 52 compounds, 80 live listings. · 95% of listings in stock at the last check. · Certificates published on 60% of listings, newest 2 months old. · Tracked for 2 days.
alphaomegapeptide
10mg$45.00$4.50/mg4.7/10Get deal →Prices sit in the 61th percentile of each compound's field — cheaper than 39% of listings. · Cheapest source we track on 1 compound. · 28 compounds, 35 live listings. · 96% of listings in stock at the last check. · Certificates published on 9% of listings, newest 15 months old. · Tracked for 2 days.
myoasislabs
10mg$47.00$4.70/mg4.6/10Get deal →Prices sit in the 65th percentile of each compound's field — cheaper than 35% of listings. · Cheapest source we track on 1 compound. · 31 compounds, 36 live listings. · 99% of listings in stock at the last check. · No certificates published that we could find. · Tracked for 2 days.
glacieraminos
10mg$51.99$5.20/mgpack: 10× → $3.90/mg6.0/10Get deal →Prices sit in the 36th percentile of each compound's field — cheaper than 64% of listings. · Cheapest source we track on 4 compounds. · 41 compounds, 169 live listings. · 95% of listings in stock at the last check. · No certificates published that we could find. · Tracked for 2 days.
onedaycompounds
10mg$52.99$5.30/mg6.8/10Get deal →Prices sit in the 52th percentile of each compound's field — cheaper than 48% of listings. · 25 compounds, 30 live listings. · 99% of listings in stock at the last check. · Certificates published on 100% of listings, newest 1 months old. · Tracked for 2 days.
coffeeandpeppers
10mg$54.99$5.50/mg5.0/10Get deal →Prices sit in the 47th percentile of each compound's field — cheaper than 53% of listings. · Cheapest source we track on 2 compounds. · 30 compounds, 62 live listings. · 83% of listings in stock at the last check. · Certificates published on 2% of listings. · Tracked for 2 days.
atomiklabz
10mg$55.00$5.50/mgpack: 10× → $4.95/mg6.1/10Get deal →Prices sit in the 47th percentile of each compound's field — cheaper than 53% of listings. · Cheapest source we track on 1 compound. · 52 compounds, 140 live listings. · 98% of listings in stock at the last check. · Certificates published on 1% of listings, newest 13 months old. · Tracked for 2 days.
primelabpeptides
10mg$55.00$5.50/mg5.0/10Get deal →Prices sit in the 72th percentile of each compound's field — cheaper than 28% of listings. · Cheapest source we track on 1 compound. · 22 compounds, 40 live listings. · 100% of listings in stock at the last check. · Certificates published on 100% of listings. · Tracked for 2 days.
hydroresearchpeptides
10mg$55.00$5.50/mg4.7/10Get deal →Prices sit in the 55th percentile of each compound's field — cheaper than 45% of listings. · 24 compounds, 30 live listings. · 96% of listings in stock at the last check. · Certificates published on 3% of listings, newest 28 months old. · Tracked for 2 days.
libertypeptides
10mg$55.00$5.50/mg5.2/10Get deal →Prices sit in the 54th percentile of each compound's field — cheaper than 46% of listings. · Cheapest source we track on 4 compounds. · 37 compounds, 42 live listings. · 97% of listings in stock at the last check. · No certificates published that we could find. · Tracked for 2 days.
optimasupply
10mg$55.00$5.50/mg4.4/10Get deal →Prices sit in the 60th percentile of each compound's field — cheaper than 40% of listings. · 22 compounds, 26 live listings. · 99% of listings in stock at the last check. · No certificates published that we could find. · Tracked for 2 days.
solutionpeptides
10mg$55.00$5.50/mgpack: 10× → $4.95/mg5.8/10Get deal →Prices sit in the 53th percentile of each compound's field — cheaper than 47% of listings. · Cheapest source we track on 1 compound. · 52 compounds, 154 live listings. · 94% of listings in stock at the last check. · Certificates published on 3% of listings, newest 41 months old. · Tracked for 2 days.
ruo
5mg$28.00$5.60/mg6.0/10Get deal →Prices sit in the 38th percentile of each compound's field — cheaper than 62% of listings. · Cheapest source we track on 7 compounds. · 43 compounds, 62 live listings. · 93% of listings in stock at the last check. · No certificates published that we could find. · Tracked for 2 days.
chameleonpeptides
10mg$57.60$5.76/mgpack: 10× → $4.90/mg5.8/10Get deal →Prices sit in the 55th percentile of each compound's field — cheaper than 45% of listings. · Cheapest source we track on 2 compounds. · 23 compounds, 117 live listings. · 77% of listings in stock at the last check. · Certificates published on 79% of listings, newest 1 months old. · Tracked for 2 days.
aiopeptides
10mg$64.00$6.40/mg5.5/10Get deal →Prices sit in the 49th percentile of each compound's field — cheaper than 51% of listings. · 36 compounds, 38 live listings. · 100% of listings in stock at the last check. · Certificates published on 3% of listings, newest 8 months old. · Tracked for 2 days.
penguinpeptides
10mg$69.00$6.90/mg3.8/10Get deal →Prices sit in the 78th percentile of each compound's field — cheaper than 22% of listings. · 25 compounds, 41 live listings. · 98% of listings in stock at the last check. · No certificates published that we could find. · Tracked for 2 days.
corepeptides
4mg$38.00$9.50/mg4.5/10Get deal →Prices sit in the 68th percentile of each compound's field — cheaper than 32% of listings. · 34 compounds, 40 live listings. · 96% of listings in stock at the last check. · No certificates published that we could find. · Tracked for 2 days.
biotechpeptides
4mg$39.00$9.75/mg6.7/10Get deal →Prices sit in the 66th percentile of each compound's field — cheaper than 34% of listings. · Cheapest source we track on 1 compound. · 39 compounds, 49 live listings. · 97% of listings in stock at the last check. · Certificates published on 100% of listings, newest 3 months old. · Tracked for 2 days.
biolongevitylabs
10mg$99.97$10.00/mg5.4/10Get deal →Prices sit in the 78th percentile of each compound's field — cheaper than 22% of listings. · Cheapest source we track on 1 compound. · 33 compounds, 36 live listings. · 89% of listings in stock at the last check. · Certificates published on 100% of listings, newest 18 months old. · Tracked for 2 days.
yoursoma
10mg$119.00$11.90/mg5.9/10Get deal →Prices sit in the 77th percentile of each compound's field — cheaper than 23% of listings. · Cheapest source we track on 1 compound. · 32 compounds, 38 live listings. · 92% of listings in stock at the last check. · Certificates published on 100% of listings, newest 2 months old. · Tracked for 2 days.
Bulk and multi-vial pricing
Ranked by cost per milligram. A pack is always a bigger cart than a single vial — the question these answer is whether it is cheaper per milligram, not whether it is cheaper.
KPV vial sizes compared
Vendors sell KPV in 7 sizes. Cost per milligram is not the same across them, so the biggest vial is not automatically the best value.
| Vial size | Vendors | Cheapest | Best per mg | At |
|---|---|---|---|---|
| 4mg | 2 | $38.00 | $9.50 | corepeptides |
| 5mg | 2 | $28.00 | $5.60 | ruo |
| 10mg | 30 | $23.40 | $2.34 | hightidecompounds |
| 12mg | 1 | $50.99 | $4.25 | fusionpeptide |
| 16mg | 1 | $43.75 | $2.73 | pepvidalabs |
| 20mg | 1 | $69.00 | $3.45 | ionpeptide |
| 30mg | 4 | $51.00 | $1.70 | hightidecompounds |
Blends containing KPV
Separate products, priced per mg of total peptide across every compound in the vial. Not comparable to the KPV prices above.
KPV price history
Median cost per milligram across the field, one point per day we crawled.
How we rank these vendors
Vendors are ordered by cost per milligram of their cheapest in-stock single vial. Nothing else moves the order — not commission, not whether a vendor has a partner programme, not how long we have tracked them.
The score beside each vendor is a listing-quality score, not a purity or trust score. We have no laboratory and we do not test anything. It is built from figures we measure ourselves: where the vendor's prices sit inside each compound's own field, how many compounds they carry, how reliably their listings stay in stock, and how many certificates they publish. Every input is shown beside the number.
Prices older than 48 hours are dropped rather than shown stale, so a vendor missing from this page is usually a vendor whose site we could not read last night.
Common questions
Who sells KPV cheapest right now?
hightidecompounds, at $1.70 per milligram and $23.40 for the cheapest single vial. That is across 37 US retail vendors, checked within the last 24 hours.
How much should KPV cost per mg?
The median across 37 vendors is $4.93/mg. Anything at or under that is a fair price; the cheapest we can find is $1.70/mg, and the top of the market runs to $11.75/mg.
Which vial size of KPV is the best value?
Vendors sell KPV in 7 different vial sizes, and the cost per milligram is not the same across them. The table above prices each size separately so you can see which one is actually cheaper per mg rather than per vial.
Are multi-vial kits cheaper?
5 vendors sell KPV in multi-vial packs. They are usually cheaper per milligram and always a larger cart, so they are ranked separately above rather than mixed into the single-vial list.
Can I buy KPV in a blend?
Yes — 7 blend recipes we track contain KPV. A blend is a separate product and its cost per milligram counts every compound in the vial, so it cannot be compared to the KPV prices on this page.
Do you sell KPV?
No. We sell nothing and ship nothing. Every link goes to the vendor's own store, and some of them pay us a commission — those are labelled on the row, and commission never affects the ranking, which sorts on price alone.