According to the Hagerty valuation tool, the third generation 4dr hardtop Sedan Cutlass Supreme with the 260ci engine in good condition has an average price of $6,100. The higher, more attractive Brougham trim with a 455ci engine costs $14,400, but that is still great value.
sources: hagerty.com, hemmings.com, hotcars.com, bringatrailer.com
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