Check your local auctions... Way back I went to one (shopping for a chip truck).. They had a air compressor with about 1000 hours on it, I'm not sure what it sold for, but the 80's morbark chipper went for $1500. Most folks seemed to be there for the vehicles and larger equipment, I made a mental note for when I'm ready to look at auctions first.I bought the air knife from Dave a while back and have been very happy with the tool and his available guidance. I'm in the market for a used compressor if anyone has any advice? I would sell and save a lot more trees if I didn't have to rent a compressor. So many trees need root flares exposed! + dig holes for planting.