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It's really up to you. If you are in the UK then shipping shouldn't be a problem, but if you are somewhere else you know they'll charge you more. I've heard great things about that monitor. You can get it straight from Dell for $159, so I'm not sure if that eBay seller is a better deal or not.
 
Nope it's more expensive on Dell's website. Just checked.
Is it matte or glossy?
 
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