I've found that most of the American Guides take Paypal. So I ask, and use that if I can to pay them in dollars. Most of the Guides from the local country will take Paypal, too, and I'm sure to convert to the local currency on my side, so they don't get charged a conversion fee. If they don't take Paypal, I'll go to an ATM and get them the local currency. If you give them dollars, it will cost them to convert it.
Sayhello