The update Eve Energy with Thread is on sale for A$55, which is pretty common, but there is also a 15% off promotion when you buy 2, bringing the price down to $46.75 each.
This is a HomeKit device, but because it speaks Thread (and will be updatable to support Matter later this month), as long as you have an Apple device to INITIALLY put it on the Thread network, you can then pair it with Home Assistant afterwards if that's yer bag.
AU?