Chubbie: Cat for Autistic son

My name is Kim and this  is Chubbie. We rescued Chubbie 2 years ago as a kitten. He had an instant bond with our Autistic son. Chubbie has a blocked urethra and sadly we cannot afford the cost of this type of surgery. We do not know the exact costs involved, but know that it will be more than we can afford. Chubbie only purrs for his "papa" and would be a great loss to this family. Please help in anyway you can; anything will help! Thank you in advance!