i think you may be missing -1's point...
this is a limited release... its NOT available commercially
it was only available at the exhibition - a bonus for those who attended - it didn't sell out so they made what was left available... when that lot runs out thats IT.
i used to collect KLF records way back and some of their releases were really scarce... what i would have done for an extra 1000 copies to be made of a 12" or CD, but no, they stopped at the production run and that was it - a couple of releases they did odd number copies of, which would have been more counter productive and cost effective if they rounded it up to 500 or 1000 copies, but thats the point... they didn't want to.
now i know in the digital age we want downloads, but the beauty of this item is that its something that you could have taken away from the exhibit, with a catalogue as a momento of your visit... its just lucky that we get the chance to buy any leftovers...its annoying it was in Japan, but its also annoying for me when Star Wars do exclusive weekends at Disneyland and the exclusive only stuff is sold in the US - which i then have to source elsewhere at twice the cost...unfortunatley just because the 1001st fan wants a copy of a record / action figure whatever doesn't mean that the band / manufacturer will or want to knock off extra copies...
i'm always pissed off if i miss getting hold of something even if its just a digital copy, but i somehow seem to manage to track it down one way or another... i know its wrong, but for UW (and i'm not condoning this wholeheattedly) this release is not commercially available and therefore is not out there to make money, so is more or less open to borrowing from the internet
i know they could make more or make it digital, but why would they... they had 180 tracks in the bin for the last few years but these aren't available either... we all have wish lists but thats the beauty (or not) of following bands like UW, its easier now in the 2010's than it was in the 1990's
i know shouting does work, and it may be that in time a copy becomes availble online uw shop, but until then i think we have to accept that this is it. UW are not making it difficult, they made it simple, unfortunatley you had to be in Japan.