Amazon with Hotec has the HOTEC 26"x16" Thickened Silicone Baking Mat with Measurement Non-Stick For Dough Rolling for $12.98 - 50% off with coupon code EVN4AMLK  at final checkout = $6.49 with free shipping on $35+ or with Prime.

Amazon promo codes don’t always work on the first attempt. Try refreshing the page and re-entering the code.