I got mine march this year.. its a Late '97 ® GS 300 SPORT, 45,000 with full lexus service history and all paperwork to back this up. Its got the Wide Pack option for the wheels, Mint condition in and out, Pirelli PZeros all round, Wheels in very good condition (not mint) runs beautifully. the guy had a reserve of 6k on ebay but i went down with £5,500 cash and got it.
I think i got a pretty good deal, my friend had paid more for his with double the mileage and a year older.
you can get cheaper ones but dont buy one with anything un-origional about it. apart from tyres, oil, water etc!! :D