The original Wii was in short supply for quite some time and prices were +£100 on ebay - I remember the fun in trying to buy one - but patience paid off as a single Wii unit came into an Argos store at normal price and I raced over to get it. I checked some website daily to see if one became available.
If Nintendo play this game again it will be worth re-selling. I bought mine in cash so that if I didnt like it I would sell it on so that the next person had some kind of warrantee - but I ended up keeping it.