Best SS-31 vendors in 2026
Buying SS-31: what the field looks like
We track 21 in-stock SS-31 listings across 13 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 $1.90/mg against a median of $3.78/mg across the field — 50% less for the same milligram of the same compound. That gap is why this page exists: on SS-31 the vendor you pick matters more than the size you buy.
The lowest total cart is $24.99 at aurora-peptides. That is the cheapest way to hold SS-31 at all, which is a different question from the best cost per milligram — the two are the same vendor only sometimes.
Top 5 SS-31 vendors at a glance
| # | Vendor | Size | Cheapest vial | Per mg | vs median | Score | |
|---|---|---|---|---|---|---|---|
| 1 | aurora-peptides | 50mg | $95.00 | $1.90 | 50% under | 5.7/10 | View → |
| 2 | peptidecrafters | 39mg | $85.00 | $2.18 | 42% under | 7.6/10 | View → |
| 3 | peptideplugs | 50mg | $110.00 | $2.20 | 42% under | 5.6/10 | View → |
| 4 | fusionpeptide | 57mg | $139.99 | $2.46 | 35% under | 6.0/10 | View → |
| 5 | evolvebiopep | 10mg | $24.99 | $2.50 | 34% under | 6.8/10 | View → |
All 13 ranked SS-31 vendors
aurora-peptides
50mg$95.00$1.90/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.
peptidecrafters
39mg$85.00$2.18/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.
peptideplugs
50mg$110.00$2.20/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.
fusionpeptide
57mg$139.99$2.46/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.
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.
peptira
50mg$139.00$2.78/mg3.5/10Get deal →Prices sit in the 63th percentile of each compound's field — cheaper than 37% of listings. · 10 compounds, 17 live listings. · 79% of listings in stock at the last check. · No certificates published that we could find. · Tracked for 2 days.
hydroresearchpeptides
50mg$175.00$3.50/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.
optimasupply
50mg$175.00$3.50/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.
onedaycompounds
30mg$109.99$3.67/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.
atomiklabz
50mg$199.00$3.98/mgpack: 10× → $3.78/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.
solutionpeptides
50mg$199.00$3.98/mgpack: 10× → $3.78/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.
yoursoma
25mg$121.00$4.84/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.
genoscience
30mg$200.00$6.67/mg4.2/10Get deal →Prices sit in the 71th percentile of each compound's field — cheaper than 29% of listings. · Cheapest source we track on 1 compound. · 20 compounds, 39 live listings. · 100% of listings in stock at the last check. · Certificates published on 13% 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.
SS-31 vial sizes compared
Vendors sell SS-31 in 6 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 |
|---|---|---|---|---|
| 10mg | 7 | $24.99 | $2.50 | evolvebiopep |
| 25mg | 1 | $121.00 | $4.84 | yoursoma |
| 30mg | 2 | $109.99 | $3.67 | onedaycompounds |
| 39mg | 1 | $85.00 | $2.18 | peptidecrafters |
| 50mg | 7 | $95.00 | $1.90 | aurora-peptides |
| 57mg | 1 | $139.99 | $2.46 | fusionpeptide |
Blends containing SS-31
Separate products, priced per mg of total peptide across every compound in the vial. Not comparable to the SS-31 prices above.
SS-31 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 SS-31 cheapest right now?
aurora-peptides, at $1.90 per milligram and $24.99 for the cheapest single vial. That is across 13 US retail vendors, checked within the last 24 hours.
How much should SS-31 cost per mg?
The median across 13 vendors is $3.78/mg. Anything at or under that is a fair price; the cheapest we can find is $1.90/mg, and the top of the market runs to $6.67/mg.
Which vial size of SS-31 is the best value?
Vendors sell SS-31 in 6 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?
2 vendors sell SS-31 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 SS-31 in a blend?
Yes — 1 blend recipe we track contain SS-31. A blend is a separate product and its cost per milligram counts every compound in the vial, so it cannot be compared to the SS-31 prices on this page.
Do you sell SS-31?
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.