Short answer: the official site only. Here's why that matters with this particular book.
The Forager's Guide is sold direct by the publisher through Digistore24. That's the only channel with the 60-day money-back guarantee, the included digital bonuses, and a guaranteed current printing.
Ten common wild foods, where to find each one, and the #1 lookalike to avoid — on one printable sheet. We'll email it to you.