I'm sure there are people that require the new medications...but so often, something older and cheaper, or even generic, will do the job. I have mentioned this to our doctors so many times that the one we usually see will actually call a couple different pharmacies and then come back and say, "We can try this one, it's this much at this pharmacy...or we can go with this more expensive one, it's this much at this pharmacy. If you want to try the cheaper one first, just call if it isn't working and I'll prescribe the other."
I think there was one time we had to go back for the more expensive one...