Live catalog snapshot for Melatonin vendor comparison.
| Vendor | Listing | Price | Price per unit | Stock | COA evidence | Batch # | Purity |
|---|---|---|---|---|---|---|---|
| Peptiva Sciences | Box of 10 vials | $110.50 | $1.105/mg | In stock | No COA | PPA-CGL-MT10-MM0001 | >= 99.0% |
| Lumira | Box of 10 vials | $97.50 | $0.975/mg | Out of stock | No COA | — | >= 99.0% |
| Retalux | Box of 10 vials | $75 | $0.75/mg | Unavailable | No COA | PPA-RL-MT10-R00256 | >= 99.0% |
| Hang Sciences | Box of 10 vials | $89.70 | $0.897/mg | Unavailable | No COA | — | >= 97.0% |