transaction fee: 0.0002412BTC.
T-shirt: 0.0004
Courier fees:0.0007
So your total cost for buying online using bitcoin payment is 0.0009412 btc right? and the product price is worth 0.00047 only? It doesnt make sense yeah its a good experience buying with btc bla bla but the cost is too much in every 10 people I think in my opinion only 1-2 of them willing to spent more money on transaction fees than the actual product they bought, btw Congrats for successful purchase using btc.