A normal book page is about 5% ink, 95% blank paper. To make a dark page, you'd reverse it: ink everywhere, the letters left blank. Twenty times more ink per page, multiplied across every single copy in the print run. And ink is only the first cost. One self-publishing printer, 48 Hour Books, will print dark pages but only sparingly. The first 5% of total pages are free. Past that, each dark page tacks on 5 cents per copy. Push to their cap of 30% dark pages on a 400-page novel and the upcharge alone runs $5,000 on a 1,000-copy print run. Go over 30% and they refuse the job. Their machines can't handle that much toner reliably. White ink runs into its own problem. Most white inks are semi-transparent (like watered-down paint), so when you lay them on black paper, the letters barely show up. The fix needs opaque white ink plus a specialty press built to lay it down as a thick base layer, then print the colored text on top. Most book printers don't own that kind of equipment. The paper has to change too. Dark ink soaks through normal book paper, so you need thicker, heavier paper. And the drying time balloons. A page soaked in dark ink needs 5 to 8 hours minimum before anything can stack on top of it. Otherwise the wet ink rubs off onto the next sheet, ruining both. Every hour the sheets sit drying is an hour the printing machine isn't earning. This is why dark-page books only exist as collector's editions. Specialty shops like QinPrinting run small batches of black-paper hardcovers and price them as luxury items, because the math demands it. You can see the same economics in books with painted page edges. Close a book and look at it from the side: that bare strip of paper along the page edges can be sprayed with color. Rebecca Yarros's novel Fourth Wing launched in 2023 with black-painted edges, only on the first printing. Standard hardcover retail: around $30. Same copy resells today for $240 to $600. Roughly 8 to 20 times the price for one strip of color you only see when the book is shut. Books can have dark pages. They just live at collector's-edition prices, because the math only works there. Mass-market printing can't absorb 20x the ink, the specialty equipment, the thicker paper, and the longer drying times. Collector pricing can.