Bobo's Vet Bills

On Friday Boricua (Bobo) started acting weird and started throwing up and meowing in pain. I took him to the vet and they found that his bladder was blocked and he was severely dehydrated. So they drained his bladder and took a sample. He has bladder stones. A lot of them. Hopefully they are the ones that can be dissolved with medication and diet and not the kind that need surgery. My dad is paying for his treatment but it's a lot of money and if Bobo needs to have surgery.... I really don't know what to do... I will be offering art in exchange for donations.