How much money will i make off of my used wii plus games and accesories?

I have a used wii with all the cords, 10 pretty popular game titles with cases and everything, 2 wiimotes and nunchuks, 1 wii wheel, 1 guitar hero guitar but no guitar hero disc ( doesnt work) and downloaded on the wii is internet and 2 games from the shop channel i would just like to know how much most people would think i could get because i want to get a new xbox 360

$300 at most.