BengaBenga on 21 December 2008
Well, VGChartz is the only place where you can get this info for free in the amounts VGC provides them.
NPD/ChartTrack/Media Create/etc all deliver numbers based on much more sales data and are therefore statistically more accurate. But VGC has been very close for most of the comparisons with these tracking services. Besides NPD only gives a monthly top 10 + hardware and European data doesn't have any sales at all, just a weekly ranking.
