They are all grammatical and essentially synonymous. I have deleted the awkward or redundant ones. How much did you pay for the book?
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hsiaoyunhSo, if I'm in a store and I want to buy a book, I can ask "How much is the book?" or "How much does the book cost?"I'll **** in if I may. In the context and locale you have provided both your questions sound fine to me. As to the rest, they are all grammatical