Amazon has the Pyle PLCM7200 Backup Camera & Rearview Monitor Parking Reverse System for $52 with free shipping. Retail price: $174. Has good Amazon Reviews.
Walmart sells it for the same price.
Walmart has the Garmin Drive 5" USA EX GPS Navigator for $70 with free shipping. List price: $97. Feature touch screen, lane assist, and microSD card slot, guides like a friend, using landmarks and traffic lights, alerts for increased awareness, including upcoming sharp curves, school zones, speed changes and more.