Water damaged macbook (Motherboard broken)

[Fi0nn]

My white macbook 7,1 has a broken motherboard after I spilled water on it.
Now I need a laptop but I certainly don't have the cash for a new macbook.
I was wondering a few things.
First of all would it be worth my while buying a motherboard from ebay (180 euros) and fixing it myself? There's a danger that the motherboard isn't the only thing that's broken though.
Also does anyone know where I could possibly buy a broken/used one which I could just switch out the motherboard (Or switch out the parts from mine into the broken one to make it not broken)?

Thanks.

 

[MeUnix]

You can buy MacBook's that are being sold for parts/repair on eBay. If you know what you're doing as far as replacing a motherboard I don't see why you wouldn't choose that option over buying a new MacBook, especially if you don't have the money for it currently.