Personally I take this promo as two halves. First is the rare item aspect that I never seem to get other than a few amulets the first time round. Second aspect is the potential for up to x7 rewards which I quite like as it effectively increases the value of your key.
I completely agree with HAWKE. This thing is a cool promo but if oyu keep releasing the "rares" it kills them! Look at the Mimic cape. I mean come on, the cape is crashing so hard because of this and it just started to become "rare" prices. This promo can easily be done with DIFFERENT items, but please at least stop releasing the cape and amulet tokens!!! You're KILLING them!!! GAH!