I am a US Amazon branded store, selling books to the UK FBM. Am I exempt from VAT Registration? I saw an in-depth YouTube video which showed a graph 3/4’s way through that books have a 0% VAT tax. Also, my products individually are way under 135 pounds (money). I’m shipping from the US, but soon will offer product fulfilled by Kindle POD. I don’t want to be in violation of owing taxes and not collecting properly. PLEASE HELP!