There's a new note up now saying that the tubes are flowing again (or will be).
https://shop.ehx.com/item/5881%20tungso ... -tung-sol/Quote:
Attention All EHX Tube Customers
The export restriction on Russian tubes has been resolved for now. We are accepting new orders, processing backorders, and hoping to resume shipping in April. Priority will be given to the oldest orders.
Considering various economic pressures, we must raise our wholesale prices. This price increase will apply to all back- and new orders. Also, there will likely be a further price increase for tubes shipped from our NYC headquarters once the government implements heightened tariffs against Russian goods, akin to the 35% rate Canada is now imposing. Other territories, including EU, UK, and Japan, are expected to follow suit.
For all non-US customers facing such heightened tariffs and with combined Russian tube orders of $3K or more: Consider having our Russian warehouse directly ship such combined orders to the nearest international airport in your country. That will avoid our having to pass along the cost of the heightened US import tariff. Otherwise, you will, in effect, incur a double tariff on shipments imported first to NYC and then to a country with heightened tariffs.
You can cancel any backorder, but we do not recommend this; there is a tremendous shortage of tubes.
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The panic is in full swing:
Prices are up and it tough to get new tubes. I believe that the China and Slovakia can fill the gap. It might take a while. I've been using JJ's, Chinese and some Russian tubes and NOS over the years. There are amps that eat tubes and some that don't. Rebias the amps that eat the tubes and see how they sound. You may end up happy with the new bias setup. In the meantime try an amp that doesn't consume lots of tubes. The Fender's Blues Jr. was supposed to be an EL84 eater.... I bought a 1st generation one new amp and used it for a lot of band practices/gigs and the Ruby tubes lasted for 6 years (they still worked). I just wanted to be safe so I put some new JJ's in. 
More motivation to cool down those tube bias settings!