actually you should be able to find a better deal in cycletrader than you would locally or on a website. usually guys on the websites sell higher because they have more personal interest in the bikes, however most who sell via cycletrader just want rid of it. of course you have to weed through the scams and such.........

i frequent quite a few webforums and will keep an eye open for a good deal, so what specific 600 are you looking for (GSX-R, CBR, 636/ZX-6R, R6, etc.)? also what years are you interested in? another biggie is what are you willing to spend?