Walmart offers the Pyle License Plate Mount Backup Camera, model no. PLCM10, for $15.17. Opt for in-store pickup to avoid the $5.99 shipping fee. That's tied with our mention from a week ago as the best price we've seen. (It's also a current low by $2.) This camera helps you see behind your car and features a 92° view, RCA output, and 656x492 resolution.