Amazon purchases

Orders and refunds

Last updated 28 September 2026

Purchases are made on Amazon, not on this website. We do not offer a separate website checkout or a 30-day money-back guarantee for Amazon purchases.

Need help with an order?

Open Your Orders in the Amazon store where you purchased the book, or contact that store’s customer support. Amazon handles payment, delivery, returns and refund requests under its current terms, alongside your applicable consumer rights.

The free sample on this website requires no payment.