[bestan]

I'm assuming that filesprout doesn't do anything about EU VAT because I couldn't find any information on their site.

What does it actually mean then? They're likely to be responsible for EU VAT anyway. Do they provide me with EU VAT invoice that states supplier's VAT number? If not, then it can't act as an intermediary, and that makes them responsible for EU VAT, even if they're based in the US.

Can I comply with EU VAT myself selling through it? Very unlikely. For each B2C transaction EU requires me to have 2 pieces of non-contradictory evidence of customer's location. I will likely need buyer's IP, billing address, card country and in some cases even additional verification if all other pieces evidence contradict (actually happened to me when I was travelling). It doesn't seem that filesprout handles all of that and can provide me with that information.