I ordered 4 tubes from The Tube Store on 3/11 and they shipped that day. Got them on 3/14. They were certainly efficient. I guess this was just before the panic buying. I already had replacements for my preamp. These were for my phono preamp. FYI these were Gold Lions. The day after I ordered, the price went up from $53.95 to $79.95 per tube.
I think that's why The Tube Store website really went down for "maintenance". Not because of too much traffic on a poor web server, but to give them time to raise their prices. I don't support businesses that price gouge.