I noticed that Hasbro has started to include a $5 off coupon in their Iron Man 2 toys when you buy $20 or more of Hasbro Iron Man 2 stuff. The coupon is attached to the little product catalog that is packaged with the toys and says it is valid till 2/15/11.
It says that you can only use one coupon per purchase and only good on item indicated. I am not really sure how long these coupons have been shipping with Hasbro products but I noticed it on the most recent batch of 3.75" Iron Man 2 "Comic Series" figures, the wave with the Hulkbuster Iron Man and Titanum Man. There is a sticker on the front of the package that mentions the coupon as well.
It appears you should be able to use the coupon at any retail location that sells these products.
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