The site is still undergoing maintenance, but I thought I should post this.
GCM has a code, Lucky2016, to take $2 off of the price of a VGC. That brings the total cost down to $503.95 since shipping is free. This could be especially useful for people who want to take advantage of category bonuses with something like the Citi AT&T cards.
Also, don’t forget to try to go through a cashback portal (although this may not work considering you’d be using a coupon code).
Take note that GCM has been known to be problematic. They’ll often cancel orders or ban people with no explanation, and they may even send cards that don’t have PINs. Take precautions before deciding to place an order.