Is it a wise trade?

I've been trading a lot of things lately. How 'bout we talk about trades we've made or are thinking about making.
People here are nice enough to help you figure out if it's good or not.

Trades I'm thinking about

My object What I'd get

Gamecube Mp3 Player

I've already got a Wii. good? bad?

The Wii already plays gamecube games, and would this trade also get game cube controllers with the gamecube.
IF not you already have a system that can simulate a gamecube
as for the Mp3, be more specific. It will all depend on the memory storage, and the accessorizes included such as charge cables and USB connections that you would consider looking into, and not just the Mp3 itself.

the items I've used for frequent trades are trading card games, but I'm slowly losing interest all together with the raising prices on rare cards and price decline on...well everything else.
Basically only the most popular cards are trade-able.