If you develop web applications long enough, you will probably come across the need to implement an e-commerce site. What starts out as a simple money for a product transaction quickly turns into the need to process returns, apply various regional taxes, differentiate shipping costs, track inventory and much more. Fortunately, the open source Ruby community has given you a starting point with Spree. Kyle Crum will walk through how Spree works as well as present some of the downsides and pitfalls associated with it.