Update: Deal over.

AmazonCommercial 10.14 fl Oz. Tumbler Superglass – Set of 6 – Link

Amazon has this on sale right now for only $3.97!

• Shatterproof plastic construction won’t break if dropped, making it ideal for use outdoors or in glass-ban areas
• Melamine-free, 100% recyclable, and food safe; for use with both hot and cold beverages
• Crystal clear glass-like clarity offers a sophisticated, classic look backed up by reliable durability
• Handwash with non-abrasive sponge for best results or place loosely in dishwasher at a maximum temperature of 70° C / 158°