The problem is that people rush to buy a juice that another member loves and then posts that it tastes like wet cardboard when they try it. Depending on whose post you read first, you either profit or lose. But then again, you might actually like it. You never know.
All those bottles of juice that you stuck in the closet after trying them may just taste good 6 months later. Time in the dark can do wonderful things to juice. There must be a kinship between PG, VG, and mushrooms.