You should look for these in Vancouver, BC, Canada and take advantage of the strong USD vs CAD if you don't mind crossing the land borders.
I sold a set in mint condition for $600 CAD with tires that needed replacing (the factory original Bridgestones) this summer. Someone is selling a set for $650 CAD on FB Marketplace now - https://www.facebook.com/marketplace/item/3931093500447551/
I think anywhere between $400-600 CAD depending on condition is a reasonable price.