If eBay includes location in their algorithms it looks like once again they are putting the American sellers first.
As they should for US buyers, pretty obvious that all other things being equal buying within your own country is normally better for a buyer.
Personally I'm not convinced that Best Match is such a big problem. If buyers don't find what they want with the Best Match as default they will change the default search to something else.
At the moment I think Ending Soonest is the default, that rarely works for me any better than Best Match.

"What else could I do? I had no trade so I became a peddler" - Lazarus Greenberg 1915
- answering Trolls is voluntary, my policy is not to participate.