i just got the email too. well, its nice of them to compensate for what is probably a madcatz shipping snafu. in response to an email i sent a few hours ago (prior to seeing the $20 giftcard one), they apologized and were nice enough to waive the shipping, so im not gonna hold a grude against them. out of all my purchases at amazon, this is the only blemish.
i am, however disappointed to be without the stick for a while. at least ive been getting much better with the DS3 d-pad. i might pickup a fightpad to hold me over til this comes tho.