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. (It's the best deal now 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.