Hehe, I kiiiind of doubt that five year Model Magic would still work - though, if it's all pliable still, you could use it for practice, no? ;3 I'd send you some of mine, but I have barely any left ;_;
(ebay is a very good idea ^^ I checked it, buuut most of what I saw are just those huuuge 8lb packages, and the others don't ship to Austria ^^; Buuut who knows, maybe I find some someday ^-^)