how much was the transaction fee？were there any additional fees from the store?
transaction fee： 0.0002412BTC.T-shirt： 0.0004
Courier fees：0.0007
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Was it a payment method (like BitPay) or was it a BTC address to transfer BTC to?
Transfer money directly to his Bitcoin address, without using any third-party platform.Quote
Was the price fixed in BTC or in USD, and did you win or lose due to volatility?
The price of T-shirts is fixed at 0.0004 BTC, and the price of international express delivery is fixed at 0.0007 BTC.In other words, this store is priced in bitcoin，has nothing to do with the dollar.If you want to convert it into U.S. dollars, obviously I am profitable. Because the price of btc a month ago was lower than it is now
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Personal experience like yours is valuable and useful to motivate others.
I am enjoying this Bitcoin shopping, this T-shirt means a lot to me. 