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 lowest price we've seen. (It's also the best deal now by $5.) This camera allows you to see behind your car and features a 92° field of view and RCA output.