Does KDP charge a delivery fee on every sale?

On the 70% royalty option, Amazon applies a digital delivery fee based on download size. The 35% royalty option follows a different model. Always read the current KDP pricing help for your marketplace.

How do I estimate delivery cost?

Multiply your ebook file size in megabytes by Amazon's published per-megabyte delivery rate for eligible 70% royalty sales, then subtract that amount from the 70% list royalty for a rough per-sale estimate.

Why are Canva exports often large?

Print-oriented PDF exports embed high-resolution imagery and full font files. E-readers rarely need that many pixels per spread, so the excess weight shows up directly in delivery-based fee models.

Can MJ Convert Systems shrink my EPUB automatically?

MJ Convert Systems optimises packaging as part of conversion — tightening images, font usage, and redundant structure so authors keep more margin without hand-editing OPF files.

How Bloated EPUB Files Are Quietly Eating Your KDP Royalties

Every MB over 3MB costs you $0.15 in KDP delivery fees. Learn how bloated EPUB files silently cut your royalties and what to do about it.

By Magnus | Published 2026-04-24 | Category: KDP

Amazon's 70% royalty option includes a digital delivery fee tied to file size. Heavy EPUBs quietly reduce what you earn on each sale.

Comparison of bloated versus optimised EPUB delivery impact on KDP royalties

Resize images before import, export from design tools with screen-appropriate settings, and choose a converter that rebuilds a clean EPUB package.

Frequently Asked Questions

Does KDP charge a delivery fee on every sale?: On the 70% royalty option, Amazon applies a digital delivery fee based on download size. The 35% royalty option follows a different model. Always read the current KDP pricing help for your marketplace.
How do I estimate delivery cost?: Multiply your ebook file size in megabytes by Amazon's published per-megabyte delivery rate for eligible 70% royalty sales, then subtract that amount from the 70% list royalty for a rough per-sale estimate.
Why are Canva exports often large?: Print-oriented PDF exports embed high-resolution imagery and full font files. E-readers rarely need that many pixels per spread, so the excess weight shows up directly in delivery-based fee models.
Can MJ Convert Systems shrink my EPUB automatically?: MJ Convert Systems optimises packaging as part of conversion — tightening images, font usage, and redundant structure so authors keep more margin without hand-editing OPF files.

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