Walmart offers the Stack-On Full-Length In-Wall Gun Cabinet, model no. IWC-55, for $61.94 with free shipping. That's tied with our mention from three weeks ago as the lowest total price we've seen. (It's a current in-stock low by $51.) It features a three-point locking system, removable top bin, foam pad for the bottom of the cabinet, and room for two rifles or shotguns up to 52" tall.