Kirkland Signature Champagne Brut Click to see full answer. Keeping this in view, what is the best champagne at Costco? These Are the Best Wines You Can Buy at Costco 2014 Kirkland Signature Alexander Valley Cabernet Sauvignon. Kirkland Signature Champagne Brut. Paul Dolan Vineyards Cabernet Sauvignon. 2011 Kirkland Signature Ribera del Duero Gran Reserva. 2016 Kirkland Signature Côtes du Rhône Villages. Complicated Chardonnay Sonoma Coast. Secondly, does Costco sell mini champagne? Costco has LaMarca Prosecco 12 bottles for 45.00. One may also ask, is Costco Champagne good? The good news: Costco’s Kirkland Champagne is more than drinkable, with delicate, persistent bubbles, and a slight toasty richness. We liked the white better than the rosé, which is nice, since it’s also five dollars cheaper. But neither of these bottles offers the complexity of flavor that really good Champagne does.How much does Veuve Clicquot cost at Costco?At Costco, a 750 mL bottle of Veuve Clicquot is priced at $44.99.