The Mercedes-Benz SL roadster is a magnificent piece of engineering that costs upwards to $85,000 when you head to your local dealer, but through the magic of depreciation, you can pickup a used one for a fraction of that cost. Just for fun, we are going to see what the newest SL500 you can get for less than $20k. The best I could find is this 2007 Mercedes-Benz SL550 offered here on eBay
for $20,950 buy-it-now or make-offer located in Mesa, AZ with 2 days to go.