Very possible. Although of course that Christopher Ranch ad was meant to scare, conjuring up visions of tainted baby formula and all.
I can get five heads of Chinese-grown garlic for $1 or less, whereas it costs me more than that for a pound of locally grown garlic or garlic that's shipped in from some other state. (I'm talking about retail, for home cooks.) It's been all right to cook with, but its keeping properties are not good (maybe for the reasons mentioned in the ad). The last time I needed garlic in quantity, to make roasted garlic paste, that's what I used, it for that it's okay.
As for peeling in quantity: at a restaurant where I used to work, the prep guys would separate the heads into cloves and then soak the cloves in water for a few hours or overnight. The skins slip off pretty easily then. But you do have to remove that hard nub where the stem was.
ETA: Forgot to mention that there is, iirc, a regulation now that requires labelling with country of origin. I think it's federal; if so, you should have no trouble finding out where your garlic comes from.