Northern Tool offers the NorthStar 1.5-Horsepower 8-Gallon Portable Electric Air Compressor for $239.99. Coupon code "254876" cuts it to $219.99. With free shipping, that's tied with our July mention at $30 off list and the lowest price we could find. It features an oil-lubricated single-stage pump, cast iron cylinder, die cast aluminum head, and floating type valves. Deal ends October 17.