They're becoming rarer and rarer. Bought a router three years ago, could only find one model sold locally that had openwrt support. Except for the latest revision, which of course is all that was available.
There's tons of perfectly functional corporate e-waste on eBay that supports openwrt, especially cloud-managed crap like Meraki that was junk when it was new. Nobody has any use for out-of-support routers, so really nice hardware (PoE, Wi-Fi 6, etc) can be had for $20 and an hour of pwning the stock image.
I hate on Meraki so much because it's the epitome of something that doesn't need to be a paid subscription except for juicing customers (the hardware is great). Ubiquiti does cloud-managed the right way; you can self host and the hardware isn't bricked if you let maintenance lapse.
