Most LCD monitors can't be returned for dead or stuck pixels until you have a certain number. If you only have 3 or 4, for example, you will probably be told just to live with it, which really sucks ...
I recently got a good deal on a HP zr24w LCD monitor from MacMall. I think it has a single dead pixel (dark) in the upper left corner. Would you try to return or exchange the monitor for this reason?