Good price for this particular monitor, £50 cheaper than most other retailers for the same model. Compared to similar monitors it's a good deal. Monitors with this kind of feature set are generally well over £600 and several £600+ monitors don't have everything this does. It's also reviewed very favourably against the competition.
This is only worth it though if you have an nVidia card. If you don't need to pay the G-SYNC tax there are better value monitors available.