Well Amazon is big seller of games in the UK so it's price point for games is indicative somewhat , but then Amazon tend to heavily discount items compared to high street prices so you could argue they are trying to sell a product with lesser demand because of the low price point ( price elasticity) but then again it's part of Amazons business practice to sell products like games below retail.
Amazon also shows the popularity of the titles being sold on amazon ; people use this as a measure of the popularity of a game over the whole geographical area e.g using Amazon.co.uk sales as indicators of a games demand in the whole of the UK. Problem is Amazons top sellers list is only a sample of all the games bought in any giving country and is basicly the same as saying "game X was selling really good at my local gamestore it's proly gonna be a million seller".










