I'm relieved to know it's not much of a tax. And since I travel with a carryon only, I'm very limited, maybe 3 bottles that I buy at the airport. Just wanted to make sure I wasn't going to get hit for $100 for doing it. Texas residents are allowed 3 gallons of wine (which I think customs will assume it is) and there's no way I'd be over that.
This is a ridiculous question from a frequent flyer, but it's just not something I've ever considered doing. Thanks again!