That whole thing is really confusing. They list Typhoon and DK armor three times each, and you can't reconcile the $170 on the 2nd line with the numbers that follow (unless the unlisted Lapina pack is $20).
Still, pretty sweet for whoever wins it, though it is weird to make it exclusive to people that are already playing GOW on XBox. It's a shame this isn't available in Quebec. At 30 minutes per entry, @Rickygervais would be racking up the sweepstakes!