Every month we write an article with a list of some of the games with the biggest increase and decrease in price. We call the series "Winners & Losers".
Winners: Video Games With Biggest Price Increase
Sword of Vermilion
Little Nemo: Dream Master
Mega Man 8
Losers: Video Games With Biggest Price Decrease
Care Bears Care Quest for GBA
Yoshi's Island DS for DS
Wonder Pets Save the Animals for DS
Mario Party 8 for Wii
Monopoly for PS3
MethodologyThe list is made up of the games with the biggest change in price compared its average price in the last two years. We use the standard deviation for the prices to eliminate games that naturally have volatile prices.
For example, a game has an average price of $10 and a standard deviation in this price of $1. 96% of the time prices will be within $8 and $12. If during the next three months the price jumps to $14, then $15, and $16 after that we can be very confident the price increase is statistically significant.