I wouldn’t read too much into the aircraft being for sale, they have been that way for quite some time and, as Hargreaves 99 points out, the market for them is a very select and small one.
I flew 3 hours on 616 in March on a film shoot and we are just waiting to see which air shows we will go to this year.
One of the Sea Kings is in the Netflix series The Diplomat at the end of episode 2 and in episode 3. I even get my face on camera for half a second😀