Calculate Print Costs

Amazon KDP uses a straightforward formula to calculate printing costs: Fixed Cost + (Page Count × Per-Page Cost). The fixed cost depends on your trim size (regular vs. large), while the per-page cost varies by ink type (black & white vs. color) and marketplace.

How It Works: Regular trim sizes (width ≤6.12" AND height ≤9") have a $1.00 fixed cost in the US. Large trim sizes (anything bigger) have a $0.85 fixed cost. Black & white pages cost $0.012 each, while color pages cost $0.06 each—making color printing about 5x more expensive.

Royalty Calculation: Your royalty is 60% of (List Price - Printing Cost) for standard distribution, or 40% for expanded distribution. This means a $12.99 book with $4.00 printing cost earns $5.39 per sale (60% royalty) or $3.60 per sale (40% royalty).

Choosing the right trim size affects printing costs, reader experience, and perceived value. Here's a comprehensive guide to all 14 paperback and 8 hardcover sizes:

Both formats have distinct advantages. Many successful authors offer both to maximize revenue and reach different reader segments:

Hybrid Strategy: Launch with paperback for maximum reach, then add hardcover 3-6 months later for collectors and gift buyers. Or release hardcover first at premium pricing, then paperback 6-12 months later to capture price-sensitive readers.