The text has been updated:
https://shop.ehx.com/russian-tubes/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 once the U.S. implements heightened tariffs against Russian goods.
You can cancel any backorder, but we do not recommend this; there is a tremendous shortage of tubes.