Hello and welcome to the community!
I'm one of the big resident moonies over here and it's not very often sailor moon stuff comes up for sale. I'm always game to trade ponies for it when it does come up. It's something like 1 doll will pop up in here like once every 6 months to a year. Ebay is one of the better places to hunt, but you can also check out
SeraSell too. That might help. I can help you out greatly if you are hunting for ponies thought. ^_^v