Wow.

Did you even think about your sanity before you did this?

First you need to make a time machine, then when you make the time machine, you need to go back in time, punch yourself in the face right before you walk into the store, then scream "GET A HOLD OF YOUR SELF MAN! THIS ISN'T WHAT YOU WANT!" as you shake your past self. Then tell your past self "So help me god, if you trade in that Wii after I punched you, I will break both your arms." then your past self will respond back with "yeah but that would hurt you too" but your cool new sane future self would just go "I'd just have to remember the hurt, you'd have to feel it"

and then you go off in your time machine, and then you Wii is back!