There are many other offers around with the same or better specs at a lower price.
most still come with a monitor, some even have a scart socket to allow viewing on your TV without the old method of loads of wires.
250G is now a bit small as many come with upto 4G hard drives.
For gameing look for the highest RAM you can get, plus the option to upgrade at a later date if you choose to do so.
The support is as imporant as the system but can add much onto the price. Many of the larger retailers offer this as an option at a cost, also high rate phone numbers to get assistance.
Gameing or not at some stage you may want other use so get a system with a printer. but whatever you get back up the system to disc allowing your files to be recovered at a later date.
Every one has there own choise of system which they have found best for them. I have for many years used Medion, and only once had to refer to them with a problem, and could not have had better support.