Starting on November 26th, all of my books will be going on sale on the US amazon site.
The First Tree will be free for five days
The Pirate Tree will be reduced to $0.99 for seven days
The Tree Problem will be reduced to $0.99 for seven days
The Shjinrende will be reduced to $0.99 for seven days
If you are looking for something new to wrap your brain around, this sale will be the optimal time to obtain these books.