Walmart continues to offer the Pyle License Plate Mount Backup Camera, model no. PLCM10, for $15.17. (Amazon has it for the same price.) Opt for in-store pickup to avoid the $5.99 shipping fee. That's tied with last week's mention as the best deal we've seen. (It's also the lowest price we could find today by $2.) This camera allows you see behind your car and features infrared LED lights, a 92° field of view, RCA output, and 656x492 resolution.