Lotus Elise

If you're familiar with the used Lotus Elise market, you'll know that prices always seem to hover around $30,000, no matter the mileage. They don't get much more expensive, and they don't get any cheaper. If you buy one and keep it in good condition, odds are you'll get back what you paid. And the driving experience? Totally worth it. This green one comes with an included hardtop, and you can own it for just under $37,000.