This article features Paul Edelman, a former teacher who develops the teacherspayteachers.com to bring experienced educators' battle-tested classroom materials to other teachers willing to pay for them. Putting course materials online is not a revolutionary idea--many other sites offer curriculum resources for teachers. What's new and different is the notion, expressed in the site's URL, that teachers can do something with their valuable materials at the end of the year besides chuck or give them away: Sell them. Because buyers can customize the products, rate them on the site, and send written feedback, Edelman maintains that TPT actually encourages better teaching materials, and ultimately, better teaching. In this article, the author describes how the idea came to Edelman and how the site has helped teachers find quality teaching materials.