The issue is figuring out what's wrong: if it's the screen or the battery. Try looking around on this site
, and see if it's an LCD problem.
As a sidenote, I got my ipod from http://flashipods4free.com/
, spending about $75 total on stuff, and $50 of that was something I forgot to return. You just sign up for trial offers (many of which cost $1.99 or something similar), and if you don't like them, you can cancel within a week. If you don't, you get signed up for the full version of the trial offer, which costs more. I signed up with a dummy account (fake email) and looked at the offers before giving my real email away. I don't think they've spammed me, but I get so much spam I don't know where it's coming from.