KDP Self-Publishing Production Pack

The agent loads kdp-preflight, then kdp-cover-spec and kdp-pricing-royalty, and runs both calculators:

$ node kdp-cover.mjs --trim 8.5x11 --pages 77 --interior bw-white
KDP paperback cover: trim 8.5x11 in, 78 pages, bw-white (large trim)
NOTE    KDP counts pages in pairs, so 77 pages prints as 78. All sizes below use 78.
Full cover file: 17.426 x 11.25 in | 442.61 x 285.75 mm | 5228 x 3375 px at 300 DPI
Spine width:     0.176 in | 4.46 mm
Spine text:      Not allowed. KDP prints spine text only on books with more than 79 pages; this book has 78. Leave the spine free of text.
Bleed:           0.125 in (3.2 mm) on every outside edge, included in the size above.
Layout, measured from the top-left corner of the full cover file:
  back   panel x 0 to 8.625 in, y 0 to 11.25 in
  spine  panel x 8.625 to 8.801 in, y 0 to 11.25 in
  front  panel x 8.801 to 17.426 in, y 0 to 11.25 in
  back   safe  x 0.25 to 8.625 in, y 0.25 to 11 in
  spine  safe  x 8.688 to 8.738 in, y 0.25 to 11 in
  front  safe  x 8.801 to 17.176 in, y 0.25 to 11 in
  barcode area (leave empty if KDP adds the barcode) x 6.375 to 8.375 in, y 9.675 to 10.875 in
Result: OK. Download KDP's template for these settings to check the layout before uploading.

$ node kdp-royalty.mjs --market us --price 7.99 --pages 78 --interior bw-white --trim 8.5x11
KDP paperback royalty: Amazon us, 7.99 USD, 78 pages, bw-white, large trim
Printing cost:      2.84 USD
Royalty rate:       50%
Royalty per sale:   1.16 USD
Minimum list price: 5.68 USD (break-even: below this KDP refuses the price)
Maximum list price: 250 USD
Expanded Distribution (40%): 0.36 USD per sale
NOTE    At 9.99 USD or more the rate rises to 60%: royalty 3.15 USD per sale instead of 1.16.

It then answers in plain words

Cover: in Canva, make a custom design 17.426 x 11.25 inches (or 5228 x 3375 px). The left 8.625 in is the back, a 0.176 in strip is the spine, the right 8.625 in is the front. Keep all text 0.25 in from the outer edges and leave the 2 x 1.2 in box at the lower right of the back cover empty: KDP prints the barcode there.

Spine: your book will print as 78 pages, and KDP only allows spine text above 79. Either leave the spine blank, or add two pages (an answer key page and a blank notes page) to reach 80; then the agent reruns the calculator, because the spine gets wider.

Money: at 7.99 USD you earn 1.16 USD per copy on Amazon.com, because KDP pays 50% below 9.99. At 9.99 USD you would earn 3.15. The lowest price KDP accepts is 5.68 USD.

Also: a word search book is not low-content, so do not tick the Low-content box; take KDP's free ISBN. Expanded Distribution will not accept word search books, so ignore that 0.36 figure. If the puzzles or cover art came from an AI tool, declare it (kdp-ai-disclosure).

Both outputs above are real runs of the scripts in this pack. KDP's own royalty calculator returns the same printing cost (2.84 USD) and minimum price (5.68 USD) for this book.