After a meeting in St. Helena, I had a purely Napa experience: I bought $16 worth of chocolate that I could nearly close my hand around, and three doors down, a small bottle of balsamic vinegar that at $160/gallon costs 66 times more than gasoline, even in St. Helena.
In other words, the Napa experience is: upscale food items, great presentation, and, natch, exclusive prices. Or excessive. Maybe both of those.