Anyone know where I can look into buying returns from major retailers?

I was picking up my friend from his workplace. His car completely broke down and I pick him up from work because its near where i go to school. I have been doing this for about 2 weeks. He works for a company who makes high end RC cars. Across from his workplace, there is a warehouse, and every Friday, they have 18wheeler trucks come unload returns. So I decided to stop and ask the driver, where all this is coming from and he said best buy sells returns to the owner here and he sells it online. I also asked him who do I get in contact if I wanted a delivery like this. As I have a post here before, I am looking for used electronic items and this type of service will be perfect for my store. Eventually I want to open up a store and sell returns like this to public except everything will be second hand electronics and it be cheap. It will be like a store full of "Craigslist" items. Looking for 50% profit on a single item.

Anyhow, anyone know how I can get a truck load like this directly from best buy or circuit city?

I have twenty thousand any my dad will give me half of whatever I am willing to put out to borrow. So he will give me 10thousand and I already have 20. This will be a great way for me start up and I want to start up by the summer of 09. Also planning to advertise in the local newspaper and sell a lot of this online.

I found a few liquidation places but the people there bid on the items so much the profit margin is low. A truck like this can give me a variety of items.

Anyone have any idea, please post and help. Thanks

Have a good one!