Amazon has the Cycplus Portable 150-PSI Air Compressor for $48 - $19 off with coupon CYCPLUS0 = $29 with free shipping. Features four nozzle attachments, a rechargeable Li-Ion battery (micro USB) that doubles as a power bank, and built-in LED light.
Has excellent Amazon Reviews.
eBay is offering Up To 60% Off A Selection Of Refurbished Tools. Shipping is free on all orders.