I've followed this developer for a while, I'm glad to see it finally out in the open. Then I looked at the pricing... wow, you really gotta dislike explorer.exe.
It's a one-time purchase of 40 bucks. 200 for priority support. It's not peanuts for many people but far from overpriced IMHO.
Good old Total Commander, the all-time classic alternative file manager for Windows, costs 42 € + VAT with lifetime updates (https://www.ghisler.com/order.htm). But yeah, I have to admit that the application looks as dated as the website...