I was looking at Surplus Center.
They have an 18.25 CFM AIR COMPRESSOR TWO STAGE 5 HP for $448.95 and the shipping was not that bad.
But since then I was able to pick up a 5hp motor, 5 hp 2 stage compressor and a 60 gal tank off eBay. The guy was only about 60 miles away and everything is like new. He said that he started to build an air compressor about 8 years ago and this was all the further he got.
I needed a motor pulley, belt, pressure switch, and in tank check valve I got them from Surplus Center. Shipping is not bad both price and time.