I spoke with Mr. Dozier a year ago about this matter and it has been lots of years without any increase. Just about every knife is more expensive now than it was 4-5 years ago. Look at cold steel. They have had significant increases over the years. CRK has done it, SOG has, Al Mar has, AG Russell has. Everybody does.
The difference with Dozier, is his knives perform better than most, if not all, others. They are still worth every penny. I also remember the thread from Mr Russell, and I agree. Supply vs demand. Bob has a longer wait than he used to, so demand must be up. Plus let's not forget about inflation!
I too will continue to buy Dozier knives. Though with the longer wait, I'll probably try AG or knifeart first!!