This is truly an interesting business model for eBay sellers. One of my students got his dealer's license and bought cars at local auctions here in Atlanta which he and his wife then resold - very profitably - on eBay. Anything seller can do to reassure buyers about quality will increase car sales, as Lexus seller knows well. " I take additional step, that you will see very few dealers do, of having an oil analysis done through a company here called MOTORCHECK on engine, which will show up any unusual wear, and tell me condition of internal parts of engine, including bearing wear, piston wear, cylinder wear, ring wear and tests for coolant leaks which could be caused by blown head gaskets, cracked heads etc."

eBay cars are great sellers, and anyone considering them as an eBay 'career' will do well, providing (s)he is able to offer high quality cars and below-showroom dealer prices.

What can we learn from this fascinating case study? What do Jay and Marie actually do?

Well, for one thing, they have huge numbers of auctions. Today, they have 83 pages of auctions listed. eBay lists 50 auctions to a page, so that is over 4,000 auctions.

Secondly, they offer great value, because their CDs begin at one cent. Yes, all of them.

None of their auctions has a reserve. Does it pay off? You betchum! Today, looking through 4 pages of eBay auctions, only 3 of them had no bids - so far.

And, naturally, their great feedback and reputation work heavily in their favor. After all, how many eBay sellers have 177,000+ feedback points with over half a million transactions completed.

This case study shows all of us how smart marketing and a great business model can pay off on eBay - and ecommerce, in general.