I recently ordered a few items from overseas, mainly books from different UK sellers, and I am not sure how much VAT or customs fee I have to pay. I got confused because I got items from different sellers. A friend suggested I check https://vatcalc.onl/current-vat-rates/ to see which items are VAT-exempt. The site lists VAT rates by category, and I found that books are zero-rated in the UK. And I also used the VAT calculator on the same site for other items I bought. It is really helpful to calculate VAT charges. https://vatcalc.onl/