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Amazon [amazon.com] has Corsair MM300 Pro 36.6″x11.8″ Extended Cloth Gaming Mouse Pad (Black/Gray) for $14.99.
Shipping is free with Prime or on $35+ orders.

Best Buy [bestbuy.com] also has Corsair MM300 PRO Extended Cloth Gaming Mouse Pad (36.6″ x 11.8″, CH-9413641-WW) on sale for $14.99. Shipping is free for My Best Buy Members (free to join [bestbuy.com]).