EO
Esme O.
1/14/2026
finally a vendor that respects your wallet
Been comparing prices across the usual suspects for months and Penguin keeps coming out ahead, especially once you stack the welcome code (got 15% off my first order). Flat shipping was around 12 bucks which beats the $20+ I was paying elsewhere for the same vials. Order showed up in four days, packed cold with ice packs still mostly frozen. COAs were actually on the product page, not buried behind an email request. Lyophilized powder looked clean, reconstituted fine with bac water for my research. Reordered twice already. Not flashy, just consistent and cheaper than the alternatives.