A little bit of both. The product database is populated with posts from several sites, including reddit.com/r/TheBestofAmazon and reddit.com/r/thecoolestofamazon. You receive a random gift from the product database.
i'm going to assume you're the developer/creator. Does the product originate from your location or is it sourced from 3rd party? ($5 w/shipping is difficult to garner any substantial items. Neat Idea
It brings back a bit of the serendipity that we've lost on the web due to the quality of a certain search company's algorithms.
See also: Random Shopper — http://randomshopper.tumblr.com — and the Random Amazon Product Generator — http://thanland.com/projects/random-amazon/ (disclosure: my site)