Has anyone ever purchased those $500 gift cards online from ebay and used those to purchase your mac? I read that if you buy online at the store, you can only enter 4 gift cards, and then 6 in the store. Has anyone had luck in this endeavor?
In my experience on the sell-side of gift cards on ebay, they get pretty close to fair value. I.E. a $50 gift card will go for $47, or something like that.
instead of buying gift cards at a minimal discount, why not buy a mbp at a significant discount? I purchased mine a couple of weeks ago for $1650 from a reputable seller. Brand new and just registered with Apple. He was selling the 2.5 version for a little less than $2100. Thats much more significant. Of course, you have to be careful who you're buying it from.
It is also not hard to sell a gift card and use the balance after its in your possession. So once you have verified the amount, there is still a chance the seller could use the numbers.