Why are some of these $100 and others are $25? Do you have a list of the $25 wallets?
The prices are determined by multiple factors:
- complexity of the piece
- size of the piece
- time involved (although I don't subscribe to the "labor theory of value")
- significance of the piece
- supply and demand
- my mood
After which I apply the "S.W.A.G." Pricing Formula (Scientific, Wild-Assed Guess)
Ultimately, it really doesn't matter due to the fact that I (and the mint) will buy them back for what they were sold for (dollar value at the time of original purchase) which creates interesting opportunities for people who are looking to buy or sell bitcoin.
The "Honey Badger" wallets were $25 but they sold out. I created a Collector's Forum on my site where people can trade with each other so you may see one pop up there or here on BitcoinTalk.org.
With all that said, I will likely create more $25 pieces in the future.
Thanks for looking!