Factory Authorized Outlet via eBay offers the factory-refurbished Porter Cable 6-Gallon 150-PSI Oil-Free Pancake Air Compressor, model no. C2002, for $69.99. Coupon code "C20LABORDAY" drops the price to $56. With free shipping, that's $14 under our mention from June and the lowest total price we've seen for any 6-gallon pancake compressor. (It's also a current best for a refurb by $27, and it's at least $43 less than you'd pay for a new unit.) It weighs 34 lbs. and features a low-amp 120-volt motor and two air couplers to support two users. A 1-year Porter Cable warranty applies. Deal ends September 4.