I have the whole collection of series two mighty beanz and I have ended up not paying anything for them. The best way to buy mighty beanz is to buy alot of them in a set even if you have a lot of the ones in the set already. The way I got my set was I bought a set of mighty from ebay that had a lot of different ones and then I bought another set and so on until I almost had all of them. When i was missing only a few I would buy them seperately on ebay and buy from the same seller to get shipping discounts. What I do with the extra ones are sell them on ebay or to other people in my neighbor hood. I have earned all the money I spent on mighty beanz back and have a full set.