What about sales taxes and VAT? Generally payment processors do not handle that.
Selling copies of one book online to customers in multiple jurisdictions subjects one to many of the same rules, regulations, and registration and reporting requirements as an entity selling copies of thousands of different books.
For the seller of the single book, dealing with all of this is likely prohibitive unless the book is a massive hit.
Use a reseller like Gumroad. They deal with all tax and VAT for you. Transaction fees are 3.5% + 30 cents. Not affiliated with them but I've looked into how to avoid dealing with problems like this previously. Paddle and Fastspring are other options but they're really for software sales I think.
Selling copies of one book online to customers in multiple jurisdictions subjects one to many of the same rules, regulations, and registration and reporting requirements as an entity selling copies of thousands of different books.
For the seller of the single book, dealing with all of this is likely prohibitive unless the book is a massive hit.