move 5-10 cars a month. They'll have enough reviews to count on but not large enough that they'll price you out if you're smart.
Know the values of the models you're shopping by year. You should get at least 10% off going rate for similar non-rebuilt title cars.
Have seller provide VINs if not provided. Search title records to see where the seller got the car. Auction sites will have pictures of the cars before the repairs made by sellers. Then you're well informed on what you're getting into before you go look over the car/test drive.
Just got a 2015 Jeep Grand Cherokee Overland with 65k miles for my son for 14k. It was totalled out for rear end damage. Seller put new lift gate and bumper and painted.