So I've thought about it and I'm thinking I could make a lot more money selling it once I fix it up. Also I could sell all my sound equipment in it then too (which is gonna take a little bit to take back out and put back in the factory stuff). And I could probably find a better deal on a car elsewhere besides that dealership. There's only 2 I'm really interested in and I'm not completely sold on either and I feel like I'd be paying way too much with only getting 4500 for my trade in. I'm probably gonna look for a new car and buy one and in the mean time just try to sell the grand prix. Even if it takes a while that's alright because I have enough saved up to buy a car at this point, so I could just hold onto it until I can find someone to sell it to.
I would still like to hear your opinions though. Also how much do you think I could sell the grand prix for? It's a 2005 GXP and 110k miles on it like I mentioned in the OP. Brand new tranny now too so that should raise the value a bit (especially since trannies going out is common on these cars, a potential buyer wouldn't need to worry about that). Like I said I have no experience selling a car (only traded in and totaled haha) so I'm not really sure what I should be looking for. Figure some of you grand prix experts might know.