GameStop's Nintendo Switch 2 trade-in deal offers big savings for Switch owners.Buyers can trade in their original Switch, Switch Lite, or Switch OLED for discounts.Trading in the OLED offers $175 off the Switch 2, the original Switch gets $125 off, and the Switch Lite gets $100 off.The exact cost of the Switch 2 is not known yet, but it is expected to be in line with affordable prices.