Walmart offers the Stanley FatMax 350-amp Jump Starter with Compressor in Silver, model no. J7CS, for $39.98. (Amazon charges the same, although it's currently on backorder.) Opt for in-store pickup to dodge the $5.97 shipping charge. That's tied with our mention from last week and the lowest total price we could find by $31. It features an output of 350 amps (700 amps peak), 120 psi compressor, USB port for charging mobile devices, and pivoting LED light.