Wow that is horrible. I had a VERY similar experience with a screen I bought a few years ago from NEC. I even ended up calling trading standards in the end.
p.s. I should mention though, that the pixel policy is one of the ISO Standards British companies have to be a part of, so I think most monitor manufacturers will hide behind the same stupid law, with regards to dead pixels. So obviously if half your screen was ruined by it, you would be able to get the monitor fixed/replaced/ or your money back. But if there are 'only' several dead pixels (I think the official cut off point is about 12 or something), then you have no legal recourse. Which I think is really not fair, but what I think doesn't stand for much.
But just thought I would mention that. All I would suggest is that you try to find a monitor that is sold in an old school "Shop" on the highstreet or at least somewhere that you can go and collect. At least that way you can reduce the chance of getting something with an 'obvious' problem like dead pixels. Some places offer an extra charge of about a tenner to check it over for dead pixels first, I think overclockers do that. Also I think there is some law that anything you buy can be returned for any reason with a certain amount of time like 2 weeks. It's under the "Distance selling regulations" which are actually quite generous to us, the consumer. Although some companies have policies that complicate things like requiring that you pay for the return cost if there is no fault. But still, it can help at times.
Although, none of this helps poor Rikrik_81. If your monitors blows and gets damaged, they should blummin well fix it. If they don't, not sure what you can do. Maybe call trading standards or the C.A.B or something. Sad you have to go to war with companies though, just to get fairness.