When it comes to any collectors edition item you don't pay over a hundred dollars or pounds for a neat box (it's an extremely plain box too). The shirt doesn't even have color. That makes its production even cheaper.
I take back what I said about the US edition though, as there is none. US got the Collectors Edition (which is 90% the same, basically), but no Crystal Edition. Still, I see this edition selling all over the place, meaning it's not really that rare, just way too expensive.
In any case, if anyone has an Xbox 360 as well, you can save a lot of money on this. I don't know why the PS3 version is going for so much more.
http://www.ebay.com/itm/Final-Fantas...item1e6b672388
http://www.ebay.com/itm/FINAL-FANTAS...item416260cff1