reactbits.dev
Animated React components and page blocks, bought once
A large catalogue of animated React components, page blocks, app UI blocks and templates, plus an agent kit, sold once with lifetime updates rather than by subscription.
The bid points at the pro subdomain, which tells you the free tier is doing the discovery and the paid tier is what needed the placement. Selling developers a one-time licence means every visitor has to convert on this visit, since there is no trial to drip them back into.
$1,300 bought 974 clicks, or $1.33 a click. Reasonable traffic at a reasonable price, on the tightest conversion maths in its category.