The Optimised Series
Refunds
Last updated July 2026
Gumroad default: refunds are handled by Gumroad. If a purchase is not right for you, request a refund through Gumroad and we will honour it.
How it works
Every volume and bundle is sold and delivered through Gumroad. Payment, delivery and refunds are handled by Gumroad on our behalf. Because the books are digital, you receive them immediately on purchase.
If a book is not right for you, request a refund through the Gumroad receipt you receive by email, or by contacting us. We would rather you were happy than hold on to a sale that did not land.
Reading before you buy
So that a refund is rarely needed, a complete free chapter and real interior pages from every volume are available to read, ungated, on our look inside page. You can see exactly what you are buying first.
Contact
For any question about a purchase or refund, contact Optimised Publications through the email address on your Gumroad receipt.