Starbucks has their double wall 14 fl oz glasses on sale for $5.99 (save $5.41 off). Shipping is extra, but these should be the same price in store as well.

They also have a couple 16 oz tumblers on sale for $7.99 & $6.99 respectively.

Product Description

This beautiful handblown glass with Siren logo marries simple elegance to functionality. Made of heat-resistant borascilicate glass, it features a double wall construction to help keep coffee hot and hands cool. Also perfect for tea, the 14-fl oz glass shows off the color of your beverage for a delightful effect, while the light catches the rim’s edge for a lovely sheen. Dishwasher and microwave safe.