I suspect it depensd on how many long-arm quilters are in your area. Around here (central NJ), not nearly enough, apparently. I had taken a quilt to the LQS that has LAQ services in early January and just got it back a few weeks ago , so that's 7 months. Nice job, but still.
Another LAQer in the area also has a backlog, although not as long as the one above. But she doesn't necessarily return phone calls so you never know where you stand on her list.