if all else fails, contact masamichi at crescent shop
http://www.crescent-shop.com/index.htm, give him all the details and im sure he can get it for you, if its not avail in stores they also check used stores, auctions etc. it may take a while for some of the rarer figures but ive always had 100% success with them finding stuff for me (like my copies of monthly shonen sunday zokan from October 1978 through May 1979 which had adachi's first original series nine, as well as finding original vhs tapes for the tv adaptation) depending on how hard to find the item is, it can take a while, iirc the longest ive waited is 6 months for him to find a frist print copy of volume 3 of urusei yatsura and the first edition lum figure with the tiger bikini

while definitely not the cheapest way to go its the absolute best source for any hard to find item outside japan (they will also buy for you and ship worldwide for items not available outside japan such as games, manga's, video's etc)