It would surprise me greatly if Broc used reverse osmosis, spinning cones, or any of the rest of that modern, high-tech stuff; but who knows?Edit: According to the tech specs for the Broc white zin, the grapes were picked at under 21 Brix, which means that the maximum alcohol of the finished wine was under 11.75%.
I've had it, and it's very good. The thing that amazes me is that it's only 11.5% alcohol. When did they have to pick to make a bone-dry zin that only got to 11.5%?(The article also mentions Turley white zin, which is also bone-dry and 11.7% alcohol. How's that for going against type?)
Its price is close to your limit, but Ca' del Bosco's standard NV Franciacorta is very, very good. For $15 to $20, I have also enjoyed Juve y Camps and Gramona Cava. Gramona also has some other bottlings for a few bucks more that are excellent. I see a lot of Val de Mer Cremant de Bourgogne (both regular and rose) for around $20 a bottle, and it's not bad.
That's a Special Club bottle/label. Was the story about the Club de Tresors? The membership is exclusively RMs, and the have to submit both the vins clairs and the disgorged Champagne to a judging panel before it can be labeled as Special Club.