There was a thread about this (still going on I'm sure), JJ prices have gone up ever so slightly, less than $1 a piece. My wife says I should double my prices, but frankly I would like to keep them right where they are. I've been told "they're worth more" and "you could get away with charging more" but my current pricing reflects what I would personally be willing to pay for a pedal. There are way more expensive pedals out there and people buy them, but I don't. I want to keep my prices where I can comfortably say "yeah, I would totally buy that for that price."
To the point of the letter, with Sovtek, EHX, Tung-Sol, Mullard, Svetlana, and whatever others I'm missing disappearing from the market, I expect JJ to get scarce. I have enough tubes on hand for the April batch and I just placed an order for 100 more which should cover for a couple more months after. Hopefully by that point things will have gotten figured out for the future.