Officials from regular UK chart compilers Chart-Track have revealed, via British trade paper MCV, that Xbox 360 sales increased by 260 percent in the week following the recent price cut and introduction of the Xbox 360 Elite, with sales dropping by only 20 percent from there the following week.
Also
With a lack of weekly or monthly data for comparison, the relative performance of each format is still difficult to judge. Sales of the Xbox 360 are likely to have been lower in recent months in anticipation of the price cuts and Xbox 360 Elite launch.
http://www.gamasutra.com/php-bin/news_index.php?story=15405
One thing I'm not sure of is if they mean to say 360 sales were 2.6 times the week prior, or 3.6 times. "Increased by 260%" technically means 360% overall of prior weeks sales. However, I suspect they actually mean 260% (160% increase)








