For a start - checking today USD 600 = ~ 385 GBP. If they retailed at USD 600 (as suggested by h1a8) then at ~ 380-400 GBP the 535s would now be sub 200 GBP (well under in fact).
Yes the 535s have fallen 'a little' - but again - economically - why would Shure drop the 846 to USD600. They don't need to. People WILL buy them at around USD 1000 - and they don't overly affect the rest of their range. Why - because the people who can't afford them will now see the SE535 as a bargain.
As far as suggesting 600 GBP - well actually you're not far off (today's rate around USD 940). By the time you take duty etc into account and maybe a street price around USD 1000 - I guess for UK customers it'll end up ~ 700-750 Stirling (street - not sure what your tax structure is on audio - could be more).
I'm not sure about your comment on things 'backfiring' on them. Their Marketing people will have taken this into account already. They are an international highly successful company. Like I said earlier - their strategy will be well thought out. And suggesting that "
most people" would rather buy the 846 at 2-3 times the price of the 535 is a little naive don't you think? I'd love it - but it's currently out of my bracket. If I wasn't an owner of the 535 already though - I'd be jumping on the 535 at a reduced price point. It really is an excellent IEM IMO - and at around USD 350 - well worth it.
Come to think of it - their current strategy could be a master-stroke. Introduce new flagship. Accept discount (20-25%) on old range. Increase sales on both. Then start bringing in new tech across whole range in another 12 months or so. Can't see too much wrong with that to be honest. Better than bringing in new tech at discount that's not needed, crashing the price on the balance of your range, and overall lowering potential profits on both