Anyway it caught my attention that many X360 owners have no idea that this app existed.  (App marketplace=> Press Y (to search) => search 'Sales' =>  Download the Sales & Specials app  *if your not from the US you can make an US or UK account to download it).

The apps gives you extra deals every week.

this weeks deals are 

Raskulls 400 MSpoints (normally 800)
MS. Splosion Man 400 MSpoints (normally 800)

It also have an lottery where you can win a game/avataritem but the chance of winning is ofcourse a little small.  

Thanks Braaa!

Ohh nice will try later tonight :P

Convenient

Cool Ill check it out.

It gets updated every tuesday with new deals (before someone would check it out everyday for new deals..Can try the lottery though) ^^'.

The chain deal thing is a clever idea. The more you spend the more you save.

Yeah but it is full of stuff that almost no one wants =p... Kryll shield for your avatar?

Ms Splosion Man for 5 bucks, wish I could buy it a second time. Such a great game.

But if you don't buy it you can't save on the other deals. That's why it's clever. Make you spend 800MSP to save 800MSP.