Have you considered setting up a gofundme? I am in a similar situation if my snake got sick so I understand your position. Do they accept payments? If so maybe you could take your snake in and post a copy of the receipt then a link to a gofundme and people would help out. I for one would kick down something, wouldn't be much unfortunately because again I'm in the same boat but I'd rather kick down a few bucks than see your guy suffer.