[wnm]

I can second the recommendation for paddle. I use it for https://presskithero.com, which has customers around the world, and we are a german company, so we have to handle very complicated european vat rules...which paddle does for us!!

[samblr]

how are refunds handled - I mean does paddle handle it ?

[wnm]

yes they handle it. when a customer requests a refund via email, I login to my paddle account, search the invoice, and simply click "refund".