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I like how the free market determines what an appropriate premium is for an asset. For example, if you want to buy bitcoin with a US amazon gift card, expect to pay a 4 or 5 percent premium. For a google play card, I have not seen a premium lower than 15 percent.
This is interesting. I'm ignorant in such matters, is the premium just bc there are way more things to buy on Amazon? Or some other reason?