Sorry the delay guys. I don't fully understand the situation with Amazon myself.
You could try ordering through an independent book store, but I don't know how long shipping would take, as the publishers are in the USA.
You can also pre-order signed through my website...
I've started a new podcast on aquascaping if you're interested!
Feedback and ideas for future episodes and seasons welcome.
Also I have a new website. https://www.georgefarmerstudios.com