Costco offers its members the Luigi Bormioli Aero 20-oz. Wine Glass 8-Pack for $19.99 with free shipping. (Non-members pay a $1.75 surcharge.) That’s $15 off and the lowest price we could find. (For further comparison, prices for a 6-pack of 12.25-oz. glasses start at around $46.) Each Italian-made glass features a titanium-reinforced stem and helical glass swirl, which purportedly reduces the aeration time. Deal ends February 7.