Do you mind if I ask how? I ask as one who is still quite bewildered by the whole Bitcoin thing, but would love to better understand how it works.
With Bitcoin on the other hand when you transfer someone bitcoin that payment is as good as giving them cold hard cash there is no way to reverse that without the seller agreeing to do so so there is no risk of a charge back. The seller can ship the good and the poor guy who just wants to buy an iPhone can buy his phone w/o having to fly to a foreign country.
Bitcoin is like Cash that works over the Internet. The same way email is a letter over the Internet. Same result w/o physical presence.
There's probably no such thing as a risk free commercial transaction. The next best thing is if somebody assumes the risk and charges an amount that covers the risk plus makes it worth their while.