The Mammoth Book of Folk Horror, edited by Stephen Jones, is around $2/£2 at Amazon US and UK and Kobo US and UK.
Strangely, the book has two different ASINs, depending on the country, though at a glance they look to be the same edition.
https://www.amazon.com/Mammoth-Book-.../dp/B084MN77C3
https://www.amazon.co.uk/Mammoth-Boo.../dp/B084VVBCW8
https://www.kobo.com/us/en/ebook/the...of-folk-horror
https://www.kobo.com/gb/en/ebook/the...of-folk-horror
Off topic: By the way, this site was unreachable for me today for a couple of hours.