1$
NOTHING!
Not much
if it would brick you wii, nobody sell it i think it will not brick your wii
200
100 to 500
There are several stores that will give you money for your used Wii. You can then use this money to purchase a PS3. However, a Wii does not sell for nearly as much money as a PS3 costs, so you will not get nearly an even trade in.
$100
150 to 250$
238
They sell the wii fit and wii fit plus disk but nota wii fit
you would get more on eBay probably
Depends in its condition. I know that Best Buy has a trade-in program that lets you know how much they'll give you for their device.