I can't call 'em until tomorrow, or most likely Tuesday, but I found this particular ad intriguing. I can't exactly tell whether it's a 2320, 2520, or 2720 - based on the pic and price, I'm assuming 2320, but can any of y'all confirm?
What put me on guard besides CL in general is that it has no real info. including model numbers. Someone stealing photos and posting a fake ad would do that.
Probably real, but never send money for something you can't touch.