A huge problem with the wine industry in America is that they’ve always tried to position themselves as a premium product with respect to other forms of alcohol. With respect to the information available to the consumer, the pricing seems to be random. Products that are aged understandably are going to cost more, and huge brands should be cheaper than small brands. Other than that, prices just seem to be set to correspond to whatever market segment they are targeting. A $20 bottle of wine may taste way better than a $15 bottle, but it could also be worse. There’s no indication of what could make the $20 bottle better than the $15 bottle other than the fact that it’s more expensive. Some brands put a little bit more info in, like the percentage of grapes, and sometimes they tell you where the grapes came from, but most consumers are just going to grab the cheaper bottle.
Contrast this with beer, where you know higher abv=more ingredients=more expensive, aged beers are more expensive, and beers from smaller or foreign breweries are more expensive. Breweries often tell you the exact ingredients that went in, so you can get a decent idea of what a beer will taste like before ordering, and you can make an informed decision to buy slightly more expensive products.
Wine is a little more tricky because there are fewer ingredients, and less processing, but they could absolutely give way more info. The wines that are good just try to market it as the magic of terroir in a bottle, rather than actually pointing out how and why they are better or taste different.