I wrote to PlayAsia some days ago with question about USB version of "NEXT LEVEL" because many stores not gonna sale this USB (they just stay by normal CD releases). PlayAsia don't know yet - they answered that will e-mail me when they'll know 
Anyway maybe the best idea is wait till peoples lost interest in it?
I don't believe in "LIMITED/OUT OF PRINT" term - there's always enough possibility to buy such releases even few years after.
EXAMPLE: few months ago I had possibility to buy brand new sealed copies of limited edition Tommy february6 albums (that with special package, photobook, long sleeve etc) and they are out of print since ages (there was only 3000 copies released) - price was the same as in the day of release. The same time I bought OLIVIA's 1st mini-album "Internal Bleeding Strawberry" (of course very rare) even cheaper as regular price and it's few years since it's out of print. The same with rare Ayu's singles like "kanariya" or "Fly High", debut singles, her old albums in 1st press version etc.