As a professional ebay seller, I know there are other things to consider with this strategy:

- It is going to cause you major headaches if you list something for sale on ebay, you sell it on ebay, then you go back to the shop only to learn it's out of stock.

- You are going to find this to be a ton of work. So if you want to try this strategy, only do it with higher-priced items. I'd recommend only selling items you can make $100+ on after all ebay and paypal fees are taken into consideration.

- Be sure you know how much it's going to cost you to ship it.  You might calculate your fees and think you're going to make a good profit, then you go to ship it and it costs $60 in postage instead of the expected $10.