Those NanoPis look really nice, lots of choice. Not seen them before, I'll check them first when I next want to buy a board. I like the router variant, might be able to put that to use as a travel router the way @jfb described a while back (he uses a TP-Link). I'm looking for something I can use as a decent firewall at the moment, to supplement Pi-hole on the network.
@Moto indeed, he explains the background to it all in an earlier interview with EC too. As you say, hopefully pricing and availability tends back towards normal later this year.