It's OK
Years ago we bought this pass for Napa. Due to the insanely high prices in nape for a simple tasting, it seemed to help save us money. We just bought the pass again for Paso and it wasn't as useful. First, the tastings are way less there. Second, many of the wineries offer 2 for 1 deals on Yelp just for checking in. Third, unless you are going simply to drive around and drink bits of wine, most of the wineries wave the tasting fee if you buy a bottle or two, which we normally did.