Costco is widely known as the best place to buy Vital Proteins Collagen Peptides, but during the Amazon Cyber Monday sale, you can get it for even less.

Costco sells a 24-ounce canister for $36.99 online and $29.99 in stores. That’s as low as $1.25 per ounce. And the lowest price you’ll ever see at Costco is when an instant savings offer is available and you’ll pay $23.99.

Amazon typically sells the 20-ounce container for about $34-$35. Right now, it’s only $25.45 and eligible for a 15% discount if you choose Subscribe & Save.

With Subscribe & Save Discount:

Buy 1 Vital Proteins Collagen Peptides, 20 oz (reg. $49) $25.45, sale price through Nov. 30
5% or 15% off with Subscribe & Save
Free shipping with Amazon Prime or on orders of $25+
Final Price: as low as $21.63, or $1.08 per oz