I disagree. One small example: many jurisdictions tax different categories of items at different rates. This means that you'd have to start off by knowing thos

I disagree. One small example: many jurisdictions tax different categories of items at different rates. This means that you'd have to start off by knowing those rules and categorizing everything accordingly. After that, you have tons of edge cases to work out, e.g., what happens if I group two different categories of items into a special package? What percentage of the package is taxed at what rate? Or, what if different states categorize the same item in different ways? Or, what happens when you provide a service to sellers and then need the sellers to accurately provide all of this categorization for every jurisdiction? Of all companies, Amazon probably has the best chance of getting this all figured out if they really had to. However, calling it difficult is by no means BS.