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You'd have to check with the individual printer. At KDP, cost is based on color vs black & white and number of pages, and that's it. https://kdp.amazon.com/en_US/help/topic/G201834340 A 200 pa...
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You'd have to check with the individual printer. At KDP, cost is based on color vs black & white and number of pages, and that's it. [https://kdp.amazon.com/en\_US/help/topic/G201834340](https://kdp.amazon.com/en_US/help/topic/G201834340) A 200 page 6x9 books costs exactly the same amount as a 200 page 5x8 book. As you can presumably fit more text on a larger page, and therefore have fewer total pages in the book, a larger trim size should (indirectly) make the total cost of the book lower. You should be able to get an estimate if you know the approximate number of pages and number of copies. And some basics about print format, like paperback vs hardcover and color vs black and white. KDP charges the same price per copy regardless of how many copies you order. An offset printer will normally give you discounts as the quantity goes up. How are you planning to sell your book? If you're going to sell it on Amazon and Barnes & Noble, then with KDP you don't order any copies. Create Space (Amazon's printer) prints them as needed to fill orders. Ditto if you use Lulu. I don't know about bestbookprinting.com, I'd never heard of them before reading your question. If you're planning to sell personally, then you'll have to order a bunch of copies to have a stock to sell from. How many you order will depend on how many you expect to sell.