HappySqurriel on 07 June 2007
In the November-December holiday buying period 40% to 50% (in extreme cases 33% to 66%) of all videogame purchases are made in North America and there is a similar (although somewhat lower) pattern in Japan, Europe and other regions. It is difficult to predict the size of the spike because supply issues and high quality game releases can manipulate the shift in sales.
You should probably (at least) create a low end and high end estimate where you take the January through October average (10 Month Average) and divide it by 0.6 for the low estimate or divide it by 0.5 for the high estimate.
