Starbucks Handblown Recycled Glass Tumbler Set of 6

Starbucks EXTREMELY RARE Hand Blown Recycled Glass Tumblers On the bottom of the glass, the "scar" is called a pontil mark, is an indicator of blown glass. Writing was pressed into the glass & says "DO NOT MICROWAVE" "FOR COLD BEVERAGES ONLY" I have 6 of them, selling the set for $80 or individually for $20 however I’m willing to negotiate.