i've already done it, I gave one to my brother and he liked it (?? so i traded him it for metallica, he hated it so, i traded that in for 42) and I did it across 4 stores.
I also scored HAWX, ninja blade and riddick for 9.89 at target, but those were to keep because i think they have poor trade in values.
Its not even worth it to bug goomba because unless you have no way of entering the states (pardon, no passport, no vehicle) buy some at the closest best buy, which is like 30 minutes from the border almost everywhere, and claim them, say they're cheaper here by 10 fold, and they're gifts for birthdays and christmas.
I even bought golf balls down there, d2 feels for 7.88 on clearance at target which blew away golf galaxys price of 15.99, so i got 30 balls for the price of 15 here.
edit; ^^^^ also, this is not even hoarding, i swear i could have bought 40 of these games, they had so many, the guy in electronics told me to take more because they're just taking up room on the shelf! lol