Exercise I have to pay for: £100/month for 3 hours a week. Included in this is teeth brushing and cleaning the poo out of the yard. I found my dog walker by googling 'dog walker' and the name of my town. These will usually be small family run businesses, but even if they don't have a website, they'll often take advantage of sites like yell.com or other online classifieds and listings. If this doesn't work, you can try looking in the local paper or asking your vet or other dog owners you know.
Veterinary care was the most difficult. My dog used to love going to the vet, but then she needed an operation to have a lump removed. After that, she associated the vet with pain, and would start shaking as soon as she got there. Add to that the physical stress that I have in leaving the house, and the fact that I'm not physically capable of holding her lead when she decides to pull... yeah, it wasn't fun. The gentleman who walks her is happy to take us to the vet as well, doing the dog wrangling while I do the decision making and payment, but it was still always a major ordeal.
But today I had the first visit from a mobile vet, who runs her entire business by making house calls. Because she's not based in my town, it was an extra £40 travel fee, on top of the cost of the consult and medication, but I consider it money well spent. Turtledog got along with her brilliantly - being examined by a vet in her own home doesn't trigger her fears. To her it was just someone else giving her attention! I will still need to take her to the local vet if there is any kind of emergency care needed, but for routine visits, the mobile vet only needs to come out once every six months, and she can prescribe medications by email in between visits.
I could add up the cost of pet ownership, and then the additional cost that being disabled adds to pet ownership. But I can't possibly calculate the value she brings to my life. So I make cuts in other parts of the budget, and consider it money well spent.
Do you have a pet? How has your illness affected them?