27. Buick GSX – $185,000
The 1970 model year was a watershed year for American muscle and performance models since never before or since there were so many great models available. Backed by steady sales and outstanding reception of their muscle models, Buick decided to introduce the ultimate muscle car in the form of the legendary Buick GSX (via Hemmings).
This car was in the shadow of more popular machines for a long time, but recently, prices have started to go up because of its rich history. The GSX is a pretty rare car due to only 678 being made in 1970.