I purchased that very same book app. 4/5 years ago, and having nothing new to read, I am currently re-reading it
I purchased mine (and many, many other gardening books) from an UK eBay store that sold books donated to charities (dropped at containers provided by the city?). This book, as most of the ones I ordered, were brand new. At that time, they used surface mail to dispatch orders and it was very, very convenient to buy from them. Unfortunately, they only ship airfreight now, which makes the cheap books unafforable at my end of the world