(Wines&Vines) - Nineteen of the top 20 luxury-priced brands sold off-premise come from California. The only one that isn’t domestic comes from Italy, and it holds the No. 1 spot. Santa Margherita is by far the biggest selling wine brand in the $20-plus category sold at major U.S. food and drug stores whose sales are monitored by the Symphony IRI Group (SIG), a Chicago-based market research firm. Well known for its luxury-priced Pinot Grigio, Santa Margherita tallied sales in the 52 weeks ending June 10 that more than doubled those of its nearest competitor, Sonoma Cutrer.