I have been excited about these coins ever since I first saw them in 2009. My youngest son (17) has been collecting Transformers since he was little and is now adding some very expensive and valuable ones to his collection of almost 1000.
These coins give me a way to combine my hobby and his into one. I plan on getting him all five that are available for Christmas this year. I know he'll absolutely love them and they are still a good investment, even if they are selling for 3x spot price.
From what I have seen, there is a big Transformers collector market out there. I am sure that it has proven to be very profitable for the
Perth Mint to mint these. As far as whether Transformers are an appropriate coin design, I do not feel that this is any more inappropriate than putting the US First Ladies on gold coins. To be honest, I find the Transformers coins a lot more desirable as collectibles than those.