Sold out yet againThat makes me want to rush out and buy some TP-LINK HARDWARE ASAP! /sarcasm.
Or you could take your toiletpaper link router and repurpose it as a WAP behind a new unifi cloud gateway ultra ($129)
https://store.ui.com/us/en/pro/category/all-unifi-cloud-gateways/products/ucg-ultra

Probably available for twice the price on Amazon.
I think this device is the ideal replacement for those of us who started with CloudKey and the USG-3P. Unfortunately I can't seem to get one.