GameStop is the value of this trade?

I just want to know what was happening For if this trade: "The units Wii controller -2 -2 Nunchucks Wii Sports Wii Princess Zelda Twilight Super Mario Galaxy, Smash Brothers Melee

Today, you get 170 dollars For the Wii and the exchange should have a Wii mote and Nunchuk. For the Wiimote and Nunchuk other, you will get about 8 dollars each. Each will receive the games About 8 dollars to 17 dollars. It is running Especially that allow you to more than 30% in the next generation. Game business, of course, if you want money , Is 20% less than the above.

New Super Mario Brothers Wii: Part 13 *fixed*