Price for Pontiac Wave

The selling price for Pontiac Wave cars has had a strong depreciation during the last 6 months we have studied. During the first month analyzed in October the average price was $5,854. November went through a strong inflation with a rise in the price till $7,180. The following two months the selling price went through a strong reduction of -50 % compared to the previous two months studied. In the last two months, the price has gone through a strong devaluation of -36 % compared to the 4 previous average values going down from $4,901.75 to $3,143.5.