BestBuy.com[bestbuy.com] has Corsair MM300 Extended Gaming Mouse Pad with Antifray Cloth (Gray Black) for $14.99. Select free store pickup where stock permits; otherwise, shipping is free on orders of $35 or more.
Amazon.com[amazon.com] has price-matched BestBuy.com and also has this product for $14.99. Shipping is free with Prime or on orders of $25.01 or more.
Superior control: Textile-weave surface designed for pixel-precise targeting and low friction tracking
No Fray, No Fuss: Surrounded stitched edges guard against surface peeling for maximum durability
Accurate + Precise: Optimized for both laser and optical gaming mice
Zero slip: Anti-skid rubber base helps it stay securely in place
I have been tracking this product at all major retailers. This is the first time the price has dropped to $14.99 since 12/11/2017, which is 188 days ago (source).
On 06/17/2018, Corsair.com[corsair.com] decreased this product's price from $29.99 to $19.99, and retailers like Amazon.com followed suit[amazon.com], while BestBuy.com dropped its price further to $14.99. (After this thread was posted, Amazon.com also dropped its price to $14.99.)