Unable to purchase full game on 360 (error message)

I am unable to unlock the trial version on Xbox 360 to the full version. I have been trying since Friday (when the game was on sale) and every time I get an error message.

When I click "unlock" the purchase window in the Xbox guide doesn't load properly. Instead I get a window saying "There's a problem with the Xbox live marketplace, please try again later. Status Code 800700E8".

This issue is still occurring for me now (Tuesday). I have purchased other XBL content on the marketplace during the same timeframe without any problems. The issue is only occurring for me with Monday Night Combat.

My gamertag is CrimsonFury82

Seems like a problem on Microsoft's end, try contacting customer support.

Seems pretty messed up. Try contacting Microsoft about it. Also, if you happen to have another Xbox or hard drive try them too.

I have a problem like that too. I purchased Castle Crashers, but whenever I want to download it it doesn't work. It says: "Can't download" with no reason whatsoever. Microsoft!!!!!1

I contacted MS support and they said the game is not for sale in Australia (yet the demo and DLC are available here). The Australian version of Xbox.com shows this as well. Very strange because I know several Australian players who purchased the Xbox game and launch, and i'm sure they weren't all using US accounts.

Has this game recently been pulled from the Australian XBL marketplace? If so why? I'm wondering if this was a mistake\glitch or whatever. MS support were unable to tell me if it had previously been for sale here.