I don't shop around for a cheaper provider because I'm with a given HMO that tells me what providers I do and do not see. Unless I have a good reason not to see one (such as the primary care doc who kept giving me antacids for a condition I finally asked to see a GI specialist about - turned out to be hiatal hernia) - I don't buck a tide as strong as that.
How to spot a shill, by John Michael Greer: "What you watch for is (a) a brand new commenter who (b) has nothing to say about the topic under discussion but (c) trots out a smoothly written opinion piece that (d) hits all the standard talking points currently being used by a specific political or corporate interest, while (e) avoiding any other points anyone else has made on that subject."
"If the shoe fits..." The Grey Badger.