Yeah, that’s because it sells, man. It’s not vaporware because they don’t sit on the shelf long.
The Sub2k was one of the biggest sellers at my buddy’s shop for a while, took about 5 years of availability for the RDB/RFB to be able to even keep them on the shelf more than a day or two. Last time I talked to him he said the survival version is now the hard one to keep around. Been a long time since I talked to him, but it’s not like he was getting a trickle of them. They were up there w/ the 6920s, flying out the door the second he put them out.