This is the Twitter thread, and @Wilde had the info. I’m not buying it, but it says I can purchase it for 1 Audible credit or $14.92 ( huh? crazy price, unless it is the Pound to dollar conversion) Note, for those finding the collection geo-blocked on Audible ( as opposed to Amazon), it is possible that one’s IP address needs to be coming from the U.S and means of payment might need to be U.S. based card. Since I’m holding off, I can’t check that.
Also, for those if you who may be geo-bocked: Audible allows you to send anyone with an Amazon account, an Audible book as a gift. ( If the recipient has never before received an Audible book as a gift, it’s free) You can your book to as many people as you want, as far as I can tell. This may be a way around international barriers.