CPO via eBay offers its factory-refurbished Porter Cable 6-Gallon 150-PSI Oil-Free Pancake Air Compressor, model no. C2002, for $64.99 with free shipping. That's $34 under a new unit today and the lowest total price we could find, although we saw a refurb for $9 less in November. It weighs 34 lbs. and features a low-amp 120-volt motor and two air couplers to support two users. A 1-year CPO warranty applies.