For what it's worth, this happened to me, also. A quick call to my bank (on the number listed on the back of my credit card) and a quick run through an automated process let me buy from GMG. I think if you don't travel much whatever algorithms they've got in place to detect fraud kick in when...
Not to belabor this, but I can confirm that the coupon worked without override or objection at the BB in Marysville, Ohio on Ico/SotC. They had several (i.e. more than 10) left. Great deal. As always, thanks to the OP and those who worked to get this deal "right."
I'm still having trouble understanding Cheapy, but I don't think it's because of his microphone; I think it's because he's got Shipwreck's nuts in his mouth. I mean, seriously: the whole discussion about SAT scores was essentially an excuse for Cheapy to compliment his man-crush while dissing...
Is it just me, or could you start a drinking game with the CAG crew's discussion of DLC? Seriously, try taking a drink every time Cheapy mentions the Saints' Row 2 DLC; there's no way you'll make it through a podcast. Dude makes it sound like the creators of Saints' Row 2 assaulted his mom...