Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.
Dell is $699 in US aka £440 ish in the UK and OP options are £199 on both screens in his OP...

True.
But there are other displays with similar specs as the Dell on the market, that also cost a bit less.
This PC-World shop doesn't seem to have any decent displays on sale at all - apart from Apple's TBD - for 900 UKP, and a 4K display for a bit more than half of that ;-)

But there's e.g. this one:
http://www.pricerunner.co.uk/pli/25-2938875/Monitors/AOC-Q2770PQU-Compare-Prices

The only cheaper one is this here:
http://www.pricerunner.co.uk/pli/25-3004261/Monitors/Benq-GW2765HT-Compare-Prices

The 4K-craze turns these displays into bargain-bin items, sort of.
Too bad that doesn't have a noticeable effect on 30" displays, yet :-(

While I was busy, my parents also bought a Full HD display for their Mini. Eeek.
I think I'd rather spend the money on the TBD than going back to Full HD, if those were the only choices.
 
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.