The knife you show looks a WK6R. With the wood scales, I’d guess it sells for $82.00. Compared to what you would pay for good quality knives, not overpriced at all.
I bought my first Anza about 1982 at a motorcycle swap meet in Saint Paul. The founder, Charlie Davis, was somewhere in the building. I bought my knife, a small utility knife, from his wife or girlfriend who was manning his table. At the time, I thought the $60 or $70 he wanted was more than I would ever pay for a knife, but my small one seemed reasonable at $25.
Over the years, I have bought nine or ten of his knives for myself, and several more as gifts. Some were direct from Charlie, some from vendors, some from private individuals on the net. Some of his bigger, more expensive knives have retail prices above what I have been willing to pay, but I have found better prices on Ebay or from his vendors. I don’t buy knives that I think are overpriced. Anza knives, even the more expensive ones, compare favorably with what you can find from more mainstream makers.
These knives are not for everybody. They are semi-custom knives, made by hand so that each one is unique even if there are others of the same model. They are always hard-working knives. At the same time, many are works of art, some of which I like a lot, while others are not to my taste.
Some of my knives are shown here. You can look at more of his designs at anzaknives.com.
He treats his steel first by annealing the very hard file steel to make it workable, then tempering it back to the desired hardness (whatever that is). That is what he says about his heat treat.