They ring you from your CarSales advertisement wanting you to bring in your car so that it can be inspected. They then send the photos out to their "dealerships" who then "bid" on your car and then they tell you the next day what the highest price they got was. Basically just a wholesaler offering wholesale prices. I rejected their offer and sold my car for $4000 more privately and they have since started calling me again leaving voicemails to discuss my vehicle (which was sold two months ago!)