As one of its daily deals, Home Depot takes up to 36% off a selection of air compressors, with deals starting from $49. Plus, all orders bag free shipping. Deals end today. A couple of best bets: Speedway 2-Gallon Hot Dog Oil-Free Air Compressor for $74.99 (pictured, low by $20) Husky 20-Gallon Portable Electric Air Compressor for $149 ($30 off)