Wow... if I wasnt saving up for a vacation, I'd be all over this one.
LOOKS good in the pic.

$1500 for this? too good to be true?

http://www.cycletrader.com/listing/2007-Suzuki-Gs-500-102121208

It does look too good to be true.

The difference between too good to be true and an amazing deal only reveals itself by burning some calories and riding at the bike.  Amazing deals can be had, especially from those who purchased a bike, never rode it, and now are in a hurry to offload the thing.  Make the call and investigate!