peptiprices.com

A comparison site tracking price and stock across suppliers of peptides sold for research use, including compounds that have become widely discussed for weight loss and recovery. Their legal status varies by country and they are generally not approved for human use where they are sold this way.

Comparison sites earn on the click out, so traffic converts to revenue in one step with no product to build or support. That is the cheapest possible business to run and the most exposed to a single supplier or regulator changing its mind.

$1,280 bought 1,098 clicks, or $1.17 a click. Closer to direct revenue than almost any other listing here, since the visitor is already shopping.