A US copy in Singapore sold recently to a buyer in Europe (Italy I believe). The seller told me the price was $30,000.
Insanity, that's almost clearing what Euro Kizuna carts used to sell for. Lord knows what a Euro Kizuna today would go for if one surfaced...
I wish we could have year 2002 AES prices again. There were a few gems like Metal Slug you'd have to save quite a bit for, but everything was at least obtainable if you wanted it enough and found it for sale. Now the AES scene is pretty much impossible to enter if you didn't start building your collection way back unless you're only after some of the older titles or incredibly rich plus aren't terrified of buying a boot (I'd never want to crack a case open of a $6,000+ game with the AES screwless cart design). Also, I would actually play a $1,000-2,000 game on a system, not so sure about a $30,000 one... lol
Grats on building your massive collection before all that!
I see the same inflation happening with MVS kits now, at a much slower pace however. Most kits seem to be a lot harder to find than their AES counterparts too(JP AES), especially the older titles... You have to just sit there and wait for the random eBay or forum lottery to produce one of something you want; but they are still a lot cheaper when you do locate them! Funny how that works.