Is this a good computer??

currently, im 14 and i have a job, which ive figured out over the summer will give me about 8-900 dollars for spending, aside for a 1000 i have to put away for a trip to europe.

i found this computer on bestbuy.ca, and yes i know i could build a better computer for about 1000, but prolly not going to happen.

is this a good deal, considering it has a monitor included, and is the power supply upgradable? im going to be using it for mostly media, and starcraft 2, so as long as it runs it im good. :)

thanks for any help.

http://www.bestbuy.ca/catalog/proddetail.asp?sku_id=BDL10001550&catid=20215&PCName=desktop_600_800&logon=&langid=EN

complete ripoff

Ya it can be upgraded, get at least a 8600GT DDR3 version.