Here is an interesting question.
Lets say I bought something from a foreign country and I paid in BTC.... simples, I paid btc the supplier accepted btc, no conversions to fiat just btc.
If the supplier declared the value of the goods in BTC and lets say my country's customs and excise duty is 20%. Is there a valid case where I'd only offer payment in btc? which would be 0.2btc?
Is it my problem if the government says the actual real goods I bought were paid for with "pretend" money? The supplier didn't think so.
Curious as to the answers from others who undoubtedly know more than me!