Dalbergia retusa has recently be added to Appendix II of the Convention on International Trade of Endangered Species. That in itself may explain the price increase.
There are those who claim the L-N planes themselves are just forgeries of Stanleys. Sour grapes.
Others will sic their patent attorneys on you if you try to sell any interface between your hand and a tool, because it violates their handle patent.
If you fashion your own tote to fit your hand specifically, and make it from some other endangered wood species, is it still a forgery?
Is anything made by a blacksmith in a forge a forgery?
Where should we draw the line between a forgery and a reproduction?
But, Wait! There's more! https://add-a-handle.com At $20 each and made in the U.S.A., how long before Alibaba is selling knock-offs at a buck three eighty seven each? Is mine a forgery or prior art?