Jim Shelden selling the Noah Howden 6.0 CFM compressors for $2000 plus shipping. This is a brute and can stand up to high use such as gun clubs, paintball shops or SCUBA shops. They are a lot cheaper than most big name shop compressors but probably built a lot better. The compressors are military grade built for 25000 psi environment but converted to 4500 psi HPA use.
http://www.sheldensportinggoods.com/
http://www.sheldensportinggoods.com/