I wouldn't pay more than 900 for ANY car with that many miles. but according to kbb u should pay up to 4275$ in excellent condition... look
http://www.kbb.com/used-cars/lexus/sc/1995/private-party-value/pricing-report?condition=excellent&id=7944&mileage=220000#survey
http://www.kbb.com/used-cars/lexus/sc/1995/private-party-value/pricing-report?condition=excellent&id=7944&mileage=220000#survey