Buick: Riviera This is a Classified ad on eBay for a fixed price of $5,990, this is NOT AN AUCTION. Click here to see all details.This site contains affiliate links for which I may be compensated. More Details More Vehicles Like This 1985 Buick Riviera$11,0001964 Buick Riviera$31,0001966 Buick Riviera$40,1101996 Buick Riviera$13,000