Dinan 2003 Mini Cooper S
 

I'm trying to get an idea of how much my car is worth. Mileage is 100k. I love the car but my wife cannot drive a stick so I've got to have a backup car she can drive. Comments welcome

Maybe gently explain to the wife that her reluctance to learn will cost thousands..... good luck, the mini has a pretty heavy clutch compared to most passenger cars.

Otherwise, if its in great condition, and if you want to move it quickly price it right at or below $7k. Maybe $7399 and be willing to drop it a few hundred. Otherwise, you are looking for the unicorn buyer that knows what you have, and might be willing to pay for it.