I believe hes asking a fair price for it. If its out YOUR price range then its different. A stock turbo supra which is in good condition will run you about 6 grand. If your saying you'll only pay one grand more for all the work he put into that car....no offense but share some of what your smoking with me.
My pockets hurt just by upgrading my exhaust to a full racing exhaust. The RSR exhaust was 600, the tanabe downpipe was like 300 and since I want my car to pass inspect the random tech hi flow cat was another 350. So if you do the math, I spent already over a grand (not counting shipping and labor fees if you cant do it yourself) on just the exhaust. Now add in the blow off valve, shocks, springs, car alarm, clubs, jdm mirrors, lights, wheels and rims. (Im speaking only my car as you can tell) And it adds up rather fast. I still need to repair the ripped seats that came with the car when I bought it, repaint the body and get a rust spot fixed. Now imagine if I redid my engine, got a full authentic bomex kit including mirrors, FMIC, radiator and everything else he has.
He has a rust free fresh rebuilt car that requires little to no work or headaches. As if finding this car in decent shape already isnt hard enough.
I agree that if want to build your own ride you wont buy it, but if you think its too much, then hey its your opinion and to each his own. But if you use some logic and basic math......you might even convience yourself otherwise.