https://www.usps.com/international/money-transfers.htm
The safety and convenience of a USPS money order makes it very easy to do distance transactions securely, even if it is to another country.
I do not have to link my bank account to any website or app that can be hacked and my 411 stolen along with my money and credit score. I do not have to remember my password for walking into a post office to buy or cash one either.
By far, they're much cheaper than a wire transfer or the PayPal Goods & Services fees. There will be your costs to drive to the post office but even that is nominal.
With PayPal, Venmo, eBay, and other players now "mandated" to send 1099 forms for any annual (cumulative) transaction activity of $600 or more, that makes using the USPS m.o. even less hassle than those other formats.
For the convenience, safety, and very affordable cost that USPS money orders provide, and they never expire, it is the best way I see to conduct distance transactions especially with their guaranteed replacement if they get lost, damaged, or stolen.
For more 411, this will explain it all for you.
https://www.usps.com/shop/money-orders.htm