I don't recall any of my friends actually collecting ponies sadly (I am Italian, moved to the USA only a couple of years ago and still have a lot of friends there), but if you would like I can ask if anyone knows anybody that collects, and how do they get their purchases. Collectors there are far more rare than here, and as far as I can remember they use ebay the most, etsy not so much. The starting at 1 euro ( in this case) is a good strategy but tends to back fire a bit much over there, meaning that too often you end up with the item sold for too much of a low price.
Britain and French are slightly better, I saw one Italian Pony on auction from Belgium. There is a part of me that kinda thinks that you may have luck selling italian ponies in Japan...