On average readers like you reckon this book is worth Euro 7.8 to them.
Contribute what this book is worth to you, by increasing the number of copies at the checkout stage to the Euro amount you think it's worth to you.
Missed our crowdfunding Kickstarter, and still want to contribute so we can accelerate the final stage of professional editing and polishing of the book? Want to be listed as a bronze (>GBP100) silver (GBP250) or gold (GBP500) sponsor in the book? Add as much as you want to help us accelerate!