Another vet here.
So you know where I am coming from:
I grew up with parents who are suspicious of science, and way too trusting of homeopathic or other similar types of medicine. As a result, I went the other way. It usually takes a lot of evidence for me to trust treatments such as acupuncture, laser treatment, etc.
I am also a very frugal person and HATE seeing people spend money on veterinary treatments that may not give them a lot of value.
That being said:
1) $250 is a very reasonable price for hip/spine radiographs (xrays) in my book :) However, radiographs are not the most sensitive form of imaging when it comes to detecting neurologic/spinal disease, which you may be dealing with, so the radiograph may not give you useful information.
2) I would definitely try acupuncture. I have been shocked by the improvement i have seen in dogs with a variety of issues, especially when neurologic disease is suspected. One session should not break the bank, and if you see no benefit, no harm done. The veterinary medical literature on acupuncture is catching up with many vets' positive experiences now, even though it is true we don't know 100% how it works. (But we don't know how many things work that we use all the time).
3) Laser treatment- some people have really seen improvement. I have not in my personal experience (and I tried it on my own arthritic dog) nor am I aware of scientific studies that show it is effective. But that might change in the future, and I always am willing to change my mind in the face of new evidence.
Also, I am sure the vet you are currently working with is fabulous, but in case you should ever be in need of a second opinion, keep in mind that there are sports medicine/rehab veterinarians who specialize in precisely these issues. I worked closely with one for my dog, and he spent almost all his time learning about the difference between laser/acupuncture/ physical therapy in treating various types of soft tissue, neuro and orthopedic disease. These people will be the most up to date regarding which treatments are worth your money and time.
Find one here:
http://vsmr.org/diplomates.lasso or ask your vet to recommend one.