Hi Tony, I think that the most successful car sales outlets are not involved in repairs. This means that they are like a shop, selling second hand goods at a mark-up. If you have the facility to do repairs it seems to imply a greater responsibility. As to stock, you should check with main dealerships as to their surplus disposal. Usually it goes to one buyer, who takes all at an agreed price structure. You could then approach said buyer or volounteer your services as a buyer. Failing that, carefull purchase at auction is fine, experience will teach to buy what sells quickly in your area. Best of luck,
Tom