Ok gonna make this short. Went to the store and they had this

http://www.freeimagehosting.net/96qq8

I wanted to buy it but had to think about it
Came back and its eye looked like this

http://www.freeimagehosting.net/jwzn7
http://www.freeimagehosting.net/f83pz

Went back and looked today and it looked like this

http://www.freeimagehosting.net/kkp34

The other eye was/is fine now but this eye still looks like this. They are offering me a really nice price on it. If I rescue this will I be in for a big vet bill? Or just proper care will take care of it.