Please Help Mr Peabody

My name is Steven Joyner. I look after several feral cats but my financial circumstances are so bad that I don't have any money to see a vet. And the vets have quoted me $50 just to see the cat, and in the area of $700 - $800 dollars to treat his damaged paw. The vets require money up front to see him and this is why I have started a gofundme. As I can't stand to see the cat I care for suffer. I have tried some rescue agencies but they are either full or a kill shelter and I couldn't bear to lose him that way.

Unfortunately, I have a series of compounded mental and physical health issues but don't receive any help from the government despite trying to change my circumstances 4 times. I have lived in a tent in my sister's backyard for 10 years and use what money for food I get to help support my local feral cats that I care for very much and are my closest companions. 

This situation is time-sensitive. I am anxious to get Mr Peabody's paw attended to before an infection sets in, or he gets snatched by a fox or coyote because of his weakened state. Please help it would mean everything to me and moreso, Mr Peabody, who deserves a chance to live.