The chart at the top shows all current auctions, grouped by price.
In this exampe, there were 156 non-rare player contracts up for 400 coins.
The time it took to sell a contract listed at that price was 14 minutes.
There were a few auctions below that price, selling within seconds. Also, there are obviously more expensive cards on the market, not selling as quickly.
The bottom chart shows the price development of the given object (this will make more sense in a couple of days, as this site is brand new...)