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This eBay seller is selling an ACHIEVA 27" LCD monitor with a resolution of 2560x1440 (similar to the Dell 27" one) for $308 USD delivered. This is one of many Korean manufactured LCD monitors and it has been given a pretty good review on Anandtech:
http://www.anandtech.com/show/5885/the-achieva-shimian-qh270…
It has also been talked about on the popular Canadian deals site RedFlagDeals and many people have purchased it from this seller without any issues:
http://forums.redflagdeals.com/korea-achieva-27-led-2560x144…
One thing to point out is that there is not a dead pixel guarantee on this particular monitor and it may have up to 5 dead pixels. There are other monitors being sold by this seller that come with a no dead pixel guarantee.
(Credit to fantaz on RedFlagDeals for this deal).
"resolution of 2540x1660"
should be 2560x1440. Some of the digits must've gotten jumbled up in the interweb.