may be true for a few vaccines (the newer ones) but the standards? No. As far as I know, all the shots I got are all more expensive to make and don’t make any profit because they’re off-patent, especially the ones that have to incubate in chicken yolks. That’s hard work! Not profitible.
It’s only the newer ones MAYBE – like the chicken pox perhaps, or the anti cervical cancer one – maybe the NEWER ones might still bre “on patent” and profitible. But not the MMR. They don’t make shit off of that.
If in doubt, vaccinate with the cheap stuff only. Some protection at least.