My idea is, buy the first batch of 5 rrod consoles off of ebay. About $40 each, so $200 total. My plan is to fix each of these, probably only costing $100 in parts for all five. So I have invested $300 in five non-working systems, $50 for each one.
What I want to do is, put up an ad on craigslist to trade my working console for their non-working (rrod) console. They give me $50 plus their broken console, and I give them my working console, no accessories involved. If I do that, after trading all 5 original consoles, I will have made $250. Since I spent $300 on the consoles before, my profits and debts and net -$50 ( I was -$300 before), but now I have five *new* broken consoles in my possession.
With these 5 xboxes, it will cost me another $100 to fix them, plus I am -$50 from before. When I trade all of my consoles, I'll have $250. Since it cost $100 for parts, and I was already -$50 for my old debt, I'll net $100. And I'll still have 5 broken consoles.
*I plan to let everyone have a 1-week warranty. They can test the system during the swap, and have a week in case I slipped up during repair.*
Profits and debts will net me with $150 each time I sell all five consoles. If I do that once a week, I can make $600 a month. (Or in my case, $1200 for the summer).
Okay, sorry for all the numbers, but I just wanted to make it clear that there is definitely some good money in doing this, considering that it sometimes takes only 2 hours to fix a 360. (At least once you have the parts and know the problem.) It works out to making 15 bucks an hour, without having pay taxes.

What I'd like to ask you guys is, what sucks about my idea?
Is the price reasonable?
Uhh... questions or comments? Feel free to say whatever comes to mind. I think this could be good money for >16 modders, just have your parents do the dealings so they'll take you seriously.
Thanks,