Walmart offers the Stanley FatMax 350-amp Jump Starter with Compressor in Silver for $39.98 with free shipping. (Amazon charges the same, although it's due to ship in 8 to 9 days.) That's tied with our January mention and the lowest total price we could find by $13. It features an output of 350 amps (700 amps peak), 120 psi compressor, USB port for charging mobile devices, and pivoting LED light.