Use Amazon coupon code 7NM8VEXY during checkout. Price Drop! Amazon has this Himalayan 8"x6" All Natural Crystal Salt Cooking Tile for $18.49. Apply the promo code at checkout and the price drops to $11.49. Yesterday the salt tile was $12.99 after the code. Shipping is free for Prime members or with orders of $49 or more. This salt tile measures 8"x6"x2" and can be used on the grill or stove top. This coupon code is valid for a limited time.