You can buy a clone on Reverb for half that cost. When you consider the time spent acquiring parts, machining the enclosure, assembling & testing the pedal and running ads on Reverb, the guys selling cheap clones on Reverb are paying themselves less than minimum wage. The Catalinbread product comes with a warranty and support. It's a free market; people pay what they think a product is worth.
I should add that some of the profit from sales at the OEM goes to fund the R&D that creates the next designs. Folks who buy boards here (and at Aion, et.al.) and build pedals have ZERO R&D costs; they are getting the design for free.