Pbtech is one of the major retailers. Their reputation is so-so (in terms of service level and dealing with warranties) but at least will give you a good benchmark on what you can buy and it’s cost.

You’re wrong. As a New Zealander (where our conservative government bent the rules to make him a citizen), I can only emphasize how strongly I will care if that giant piece of shit moves to reside in my nation. I’m not negating your point (I upvoted you) and I don’t blame you for wanting to lose him, but just because you shovel your shit elsewhere doesn’t mean it don’t stink.

I’m running six Shelly Plug S and all working well with Home Assistant, but I could definitely play a bit more with the data it’s drawing from them. Only issue to date was that I bought a new clothes iron and it would trip the plug as it was over the 2.5 kW the plug is rated for, might just be something to keep in mind. The in-wall relays may go higher, I’m not sure.