Umm lost of people on here will say that things are rare... oooh a rare object or a rare tama...not likely. Unless they have been specifically sold and advertised as limited edition, you will probably be able to find them around a fair bit. The best way to find out is to run a search on ebay now and then again in a few weeks... you will see how "rare" it is then. Be careful though, lots of ebayers will advertise their product as being rare to attract buyers.
Now I have been known to be wrong and I am open to the possibility again but at this stage I dare say it is unlikely.