If these are indeed the official UK prices well, I prefer knowing reality than even educated guesses!
My educated guesses were, very close to these prices for the RF 85 STM, RF 600mm and RF 800mm would be.
Out of these 3, I am most interested in the 85mm (i.e. I can't see myself getting the 600mm or 800mm).
However I had hoped the RF 100-500mm might have been closer to around £/$2300 - because of the smaller aperture.
(But I did realise the 100-500mm was a premium in reach in terms of Canon's EF 100-400mm L IS USM II).
The RF 100-500mm is a lens I would be quite keen on after I pick up a RF 24-105mm f/4. That'll make a good 2 lens travel combination.
The £/$2900 sets the bar high for me finding innovating ways of saving money after I hope put my hard earned cash in to buy a R5.
The good thing is with a EOS R adapter (EF lens on an RF mount) do work well (I've tried it on a friend's and store EOS R).
And I am assured that I will still get a lot of good use out of my EF 70-300mm L for a while. It's been great on my DSLRs.
As we know, extra reach s always welcome.
The EOS R5 is only a few days away from being announced!! Yay!
PJ