I have a Wii. I'm not a very avid video game player, but I have been looking forward to the new Super Mario Galaxy. Toys R Us has a sale this week only where you buy the game for $50 and they give you a $25 gift card good on your next purchase. Great deal, but they have trouble keeping the game in stock.
Today, I got lucky and got the last two at the East Tucson Toys R Us. I then went to the North Tucson one, and used the two gift cards to buy a third copy of the game. Now, for total investment of ~$112 (including tax), I am the proud owner of three copies of Super Mario Galaxy, plus one more $25 gift card. Now, if I can sell two copies for a net $43 a piece, and use the last gift card for something I would have been buying anyway (like Christmas gifts), I will have finagled myself a free game.
I am so proud.