RBR50 on Clearance?

I suspect it's because they know they're not going to be able to restore the stability that was lost with 1.11.x and in some way, they've permanently damaged the hardware in a way they can't recover.

It could also be a technique to continue interest while so many people are complaining on the internet.

It could also have nothing to do with the instability.

It's actually not on clearance.  That $199 is for the RBR50 unit only.  The two unit set (RBR50 + RBS50) is still $399.

Here is the RBR50 only link:  https://www.bestbuy.com/site/netgear-orbi-tri-band-wi-fi-router-rbr50-white/5589803.p?skuId=5589803

The most likely answer would be that the router alone (RBR50) is not selling well by itself at $249.  That makes sense when you consider a router by itself doesn't provide the benefits or Orbi, and you can buy a kit for $399 and a satellite alone costs $249.