I was looking at a alienware for 2199
Alienware is grossly overpriced and not needed. seriously they may have great components but you can get a PC that is not overkill for around £800 that will play anything just fine on 60fps +
over here in the UK when i bought mine it cost me £550 (at the time aroud $890) and it still plays Skyrim just fine this was about 3years ago? not 100% sure basically crisis etc all run fine on 60fps they eye cant see faster than 30fps anyway no matter what people tell you it is scientifically proven.
basically buy a cheaper PC Tower preferably without office etc as thats a waste of space. make sure it has an up-to-date processor, Graphics card/video card and is well ventilated with wire management.
that should set you back about $800 $1200 with a good mouse/keyboard and screen. you could even find it cheaper to be honest.
so many people think ''oh man i need a new pc to run this'' and that is mostly un-true sometimes ofcourse its cheaper to buy a new PC than buy the components but for example you can pick up an up to date graphics card for $60-100 (£30-60) and have no problem running anything whatsoever shove a few more ram sticks in and it is literally as easy as open and click in.
dont egt ripped off stay away from alienware and instead for the price difference get a nice keyboard and a nice comfortable mouse.
ebay / amazon have great deals and all have warranties and return polices.
here is a great example:
http://www.ebay.com/itm/Gateway-FX6803-25-Core-i7-930-9-GB-1-5TB-HD-Gaming-Computer-Desktop-PC-/270890220295?pt=Desktop_PCs&hash=item3f1250bb07
spend more if you wish but that should run whatever just about fine. the graphics card is two years old but you can easily buy a newer one for $60 in mint condition.
mines pretty simulary specced and runs crisis and skyrim on ultra although i choose to run things on medium as i hate the idea of over-using cards

ive already brunt two out haha but that wa when i played around 8hours a day now im down to 2....if that.