You'll be looking at $15k..
If you want 'new' feel and look in a near 15 year old car, you *will* pay a premium...
Any less than that, you'll get obvious wear, and/or most of the bushes, brakes, etc will have to be replaced. It won't cost you too much less in the long run probably.
I'd pay $20k for an R32 if it had an engine swap and/or big turbo and big HP and decent suspension setup... Will crap over an R33 of the same price.