When I was about 16 year old, I had a vet bill of 2 grand for my springer bitch...
She was my first dog and I havent regretted doing it once. I had to work like feck to get the money together, you may as well have called me Clint, but it was worth it.
Now, on the other hand, if I had a dog where the treatment would outweigh the cost of buying and rearing a pup to that standard I dont know if I would do it.
If the dog gets an injury out working, I think it's your duty to get it sorted. If spending a little money will get it working again then it's worth it. A lot of the things vets do