Walmart offers the Pyle License Plate Mount Backup Camera, model no. PLCM10, for $16.49. (Amazon charges the same.) Opt for in-store pickup to avoid the $5.97 shipping fee. That's tied with our mention from a week ago as the lowest price we've seen. (It's a current low by a buck.) This camera helps you see behind your car and features a 92° view, RCA 1.0 output, and 380 x 60 resolution.