Amazon has the VacLife VL731 Tire Inflator DC 12V Portable Air Compressor for Car Tires, Bicycles with Schrader Valve and Other Inflatables with Emergency LED Light, 9.2 ft. Long Power Cord, Auto Shut Off for $30 - $10 off coupon (check green "Save coupon" box) - 20% off with code VLGO731RE at checkout = $14 with free shipping on $25+ or with Prime.