The highest contrast ratio of the HKC 2276A is 1000000:1. That's 80% less contrast ratio than the most common dynamic contrast ratio of 5000000:1. Across all medium monitors that were launched more than a year ago the worst contrast ratio is Mega Contrast and the best is 100000000:1.
Other PC screens that have a 1000000:1 dynamic contrast ratio currently available which you might also want to consider include the V7 L21500WDS-9K which is cheaper.
PC screens with a higher contrast ratio that might be worth looking at include the HP ProDisplay P232 (£65.34) (5000000:1) which is also cheaper.