This is Acers and according to that 16 dead pixels before they will do anything about it. The guy who had 19 was fortunate!
http://www.acer.co.in/ac/en/IN/content/dead-pixel
To quote a forum member of OC.net with regards to his dead pixels on the XB270HU.....Sounds familiar
So far reading that thread sounds like best advice if you do want to buy this monitor is A) dont be an early adopter and B) double check your return/warranty status and DP policy. Makes you wonder why Acer are offering US customers an $80 discount if you buy from them direct.