Hip Surgery for Max

Max is a rescue pup I got in February of this year. He was always a gangly clumsy pup and nothing was ever thought of it. But he turned a year November 1st after a big growth spurt and was starting to show some odd signs. He would usually fumble and fall going up stairs, struggled to get on the couch at times and was limping after his walks. He started to not want to sit or lie down and would struggle to get back up at times when he did, he even started chewing his bones standing up. I took him to the vet thinking he had injured himself only to get the terrible news he had very bad genetic hip dysplasia. His hips are completely loose in their socket which causes rubbing and pain. The option was to attempt to treat the pain which left him an expectancy of only a couple years or do a triple pelvic osteotomy to rotate the joints in and tighten them up. My dogs are my world and through everything that's gone on in my life they gave me reason to wake up in the morning. I opted for the TPO surgery which has a great outlook for Max's future. And while my friends know that I rarely ask for help and feel shame in this kind of thing, this time I could really use any help I can get. The surgery is going to cost $6'900 which is a huge up front expense. But worth it to me. Not everyone would spend that kind of money on a dog but to me if we'd purchase a new $30000 car and not blink twice at the $10000 depreciation within a couple years then why is it wrong to spend that to give an animal an extended life.