Yes, I've sold them two vehicles but they were older cars with lots of miles. It works well if you don't want to deal with selling it privately on Craigslist or whatever, you can get a bit more that way.
At the very least I recommend taking it to them and getting their offer, takes like an hour and gives you a baseline price to work from if you decide to sell it privately, it's great to know you can always get that amount for it, offer is good for 30 days I believe. I sold them a Honda Accord with 250k miles and a failing transmission for $2,000
Works for me