Psp is a very old product from sony.
Psp made up the best hand held gaming device for the teens.
The cost of sony psp was around 7000 bucks and its going lower and lower every day as sony has discontinued the production of games for this particular console.
Psp had some extra costs for buying a external memory stick snd also the disk for every game you want to play.
So later on cracks were developed where you could add games on memory stick itself so that helped a lot to the teens as the cost of cds was to high.