The earths magnetic field influences the needle when I am standing 400+ km away from magnetic north. To have the coil of a transformer influence my needIe, I have to be relatively close to it. So I feel like your statement is incorrect.
I’ll happily be corrected if I overlooked or misunderstood something.
If they are really rich, the US is an amazing place to live and 5m is nothing to them. If one has to save up for that card, it’s a shitty deal.