I'm thinking of checking out a used compressor for sale tomorrow, but I can't find much info on it. It's a 30 gallon Curtis with a 1.5 hp dual voltage motor. I can't find any reference to a Curtis that size, let alone one with that size motor. Cany anyone fill me in on some info about this compressor (sorry, no model number - I'll have to go take a look at it)? Any idea what kind of performance I can expect from it? At this point I don't know how old the thing is, but if it is in decent shape, what would be a typical price for a used Curtis like this?