Tom I have been flipping bikes for only four years and almost nothing in the last year. I was flipping 2-3 Centurions a week Cannondales just as fast. The market has changed and my sources for bikes has fried up. I have been flipping high end audio equipment for 8 years and that gave me the know how to do it. Big pictures on CL using Photo Bucket helps a lot. I bought tires in bulk and got a lot of parts from Loose Screws. I am retires so I would pick up bikes during the week and sell them on the weekend. I would answer a add for one bike and end up getting two. I was not buying any junkers,only clean bikes. I only used CL never Ebay.
Ed