It's not safe at all. In fact, selling on eBay is not safe, period. eBay will virtually always side with buyers in any dispute, and this is exploited by international buyers very frequently. The only negative feedback I have ever received - twice - was at the hands of international buyers. In my case, neither buyer identified themselves as such; they both used re-shipping services.
In the first case, the buyer provided an address that eBay states is invalid. In fact, eBay shipping wouldn't even generate a shipping label. The buyer threatened me with negative feedback and insisted that it was a valid address, and they left me negative feedback because I cancelled the order to the address that eBay says was invalid. Keep in mind, eBay states that you have NO seller protection if you don't ship to the address on file. eBay decision: they let the negative feedback stand.
In the second, the buyer again shipped the product out of the country. They contacted me a month later asking for a full refund, claiming the product arrived DOA. When I offered a refund on return of the product, they refused to return the product and threatened me with negative feedback. And again, they left it.
Here's the thing - these international buyers know that positive feedback is essential for eBay sellers. Without it, our listings don't receive as many views because eBay does not rank sellers with negative feedback scores as highly as others in search listings. So they abuse the power of negative feedback, because they know that if they seem "truthful" in their feedback, eBay will let that negative feedback stand even if you as a seller did nothing wrong. In my own case, the first buyer said I was a "bad seller" because I cancelled after they paid. But they left out the fact that I literally could not ship the product to them without violating eBay policy. eBay considered that truthful feedback.
Just don't deal with international buyers. IMO the risk of being scammed goes way, way up.
