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Last reviewed by Robert Prime, 12 October 2026. Checked against Amazon’s own help pages: trim size, bleed and margins, paperback printing cost, paperback royalty and create a paperback cover. Quick Answer: 8.5 x 8.5 inches (21.59 x 21.59 cm) is a square KDP paperback size.
Last reviewed by Robert Prime, 12 October 2026, against Amazon’s Format Front Matter, Body Matter, and Back Matter page and its metadata guidelines. Quick Answer: The half title is just the book’s title, alone on the first right-hand page.
Short answer: for a novel, choose a classic book serif: EB Garamond, Crimson Pro, Alegreya or a Palatino-style font are the safe choices. Georgia, or its free twin Gelasio, suits readers who like a larger look. For non-fiction, Source Serif, Literata or Lora.
Short answer: most adult novels are 70,000 to 120,000 words, and around 90,000 is a typical average, according to Jericho Writers’ guidance. Genre moves the range a lot, from 50,000 for category romance to 180,000 and beyond for epic fantasy.
Short answer: the standard UK book sizes are A-format 111 × 178 mm, B-format 129 × 198 mm and Demy 138 × 216 mm for paperbacks, and Demy, Royal 156 × 234 mm or Crown Quarto 189 × 246 mm for hardbacks and larger non-fiction. A5 is 148 × 210 mm.
The short answer Standard colour, unless the pictures are the product. On Amazon.co.uk a 250-page paperback prints at about £5.85 in standard colour and £11.73 in premium — £5.88 a copy, every copy, for heavier paper and richer ink. That difference is bigger than most authors’ entire royalty.
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