Sears offers the Whirlpool 30" Gas Cooktop with SpeedHeat Burners, model no. WCG51US0DS, for $499.99. Coupon code "SEARS35OFF300" cuts it to $464.99. With free shipping, that's the lowest total price we could find by $28. It features a SpillGuard cooktop, 15,000BTU burners, and a 5,000BTU AccuSimmer burner.
Of note, Shop Your Way Rewards members will earn a Sears credit with this purchase and may be eligible for additional credits and discounts.