CarMax (where you're buying it) or CarFax (the reports, which are next to worthless in many cases)? IIRC, the 90K service is more than just T belt. Includes some things like tranny fluids, filters, driveshaft adjustments, etc.. If at a dealer, I would insist on full 90K service, w/ OEM parts. If private, cll Lexus and find out what they charge for it. Also, make sure the computer was reflashed. That was a 96 mo/80K emmissions warranty issue, but only done if someone complained (cheap *BLEEP*s). Makes a big difference.