I sold a car to them. They'll either show up with a check or electronically deposit the money. I chose the eft and it took 2-3 days for the money to show up in my account. The only reason I did that was to avoid my bank putting a hold on the check (I just assumed they would, yours might not.)
I was very happy with my experience. They showed up, started the car, looked at it for like 60 seconds and then we signed the paperwork and it was done. They didn't even test drive the car haha.