Help me help Marley

Marley my boy is only 10 months old. He is a beautiful cat. Snuggly, affectionate and lazy.... He has grown up with his best friend/sister/true love Nala, since the day we picked them up from the SPCA. Recently Marley didn't come home... which is very unusual for my boy. Hes usually home as soon as my car pulls up waiting to be fed and loved. We searched for hours for my boy and we could not find him. Two days later we found him by the house, he had dragged himself as close as he could to us but could not make it up the stairs. We took him to vet straight away and were told that he had a huge hernia and it looked like it was a car that had hit him. All of his insides weren't being kept in the right place.. she said he had a great chance of surviving and being happy, if we could afford the surgery he would have to undergo. It looks like the surgery is going to cost from $6000-$7000.

Although a lot of people have said to me "Shayla you cant do it, you dont have the money, hes just a cat", I could not bring myself to let him go. He is so smoochy and alive right now, knowing he has such a good chance of being happy and alive, I cant bring myself to let him go. In March of this year lost another cat, Little Man. I cant lose another one. Hes my boy, hes my baby, hes my best friend. Please help us. Any donations at all would be greatly appreciated, every cent counts!