Amazon offers its Prime members the H&R Block At Home Premium + State 2012 Tax Software for Windows and Mac for $23 with free shipping. (Non-members can spend $25 or more to qualify for free shipping; otherwise, shipping costs $4.48.) That's $4 under our mention from three weeks ago and the lowest total price we could find by $18.

This software is also available as a download for Mac or Windows for $23.