Hard to say but I know I need your rotors! Folks need bits of parts, and then there are those who will need the full set. In other words, you'll get a lot of interest.
(If you do spilt I'll take the rotors. Did I mention that?!)
I saw the Facebook listing and actually thought £280 was a lot. But then again I’m not after all of what you’ve listed there.
There’s a couple of rare parts however, so maybe that’s why you have demand.
For what’s it’s worth I only fancied the rear skewer, and thought shelling out £280 just for that was a bit too much!