Not sure how prices are out there in UK....but usually yes prices go down. (used to work at the retail computer store for the past 6 years).
Usual trend is to go down. However high end video cards, and Larger drives, as well as high end Video cards could sometimes be hard to get ahold of during the Christmas season, and then the trend continue on thru after the Christmas season. That being said sometimes the prices don't necessarily go down, but to go up by that much? sounds a little obsurd. I'd suggest getting a couple of options....and try shopping around. I dont know how much the difference means to you 1200-1500...in relation to the American $.
Seems like using Xe.com, and converting, the 1200 = $1700+
A while back the conversion was almost double before....so 1200 would equal 2400. So wow...that $ is rising!? not sure I dont really watch the trend.
This place has some good info about prices sometimes(they have price guides):
http://www.sharkyextreme.com/Weekly cpu price guides:
http://www.sharkyextreme.com/guides/WCPG/index.phpVideo card guide:
http://www.sharkyextreme.com/guides/article.php/3787796Memory prices (High End usually):
http://www.sharkyextreme.com/guides/WMPG/index.phpSo some good info there. I dont know if there's anything in the UK that would have prices listed in a FAIR manner.
Also here's a Gaming PC Review 2009 (the specs are a little bit older I think...but if you can find a review that is similar to the parts and the times....might give you a good idea on if you are getting a good deal or not):
http://gaming-pc-review.toptenreviews.com/So just take into consideration the conversion of the GBP to the Dollar.
Good luck! PLEASE ask before buying...if you can get us brands and model #'s...we can look it up and compare prices and help work it out with you...