For a while there, it seemed like the pace of technology was moving so quickly that our newest gadgets were obsolete by the time we got them out of the box. Today, things have slowed down a bit. Now, rather than going from flip-phone to iPhone, we're going from iPhone to slightly faster iPhone.

That's where Computer Add Ons, Inc. comes in. While other stores scrap last year's model for the latest—but not always greatest—new version, Computer Add Ons holds onto their stock. The result is an inventory full of never-opened Kindle Paperwhites, late 2015 iMacs, and previous generation Apple Watch Sports.