The Mass Effect Collector's Edition for Xbox 360 includes all three games in the series - Mass Effect, Mass Effect 2, and Mass Effect 3. This special edition features a SteelBook case, a premium manual, and exclusive content. The paper boxes they come in aren't in great condition (see photos), however the tins are still in excellent condition (see again). Most, if not, everything is here. But I should say I can't be certain that all original pamphlets are still here. if you'd like I can send some more detailed images of all paper/items that come with it that might not have been perfectly captured in the listing's photos.
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