Amazon offers Prime member the Maverick M Remote Smoker Thermometer in White, model no. ET-73, for $34.30 with free shipping. (Non-members can spend $35 to qualify for free shipping; otherwise it adds $5.74.) That's the lowest total price we could find by $3, outside the mention below. It monitors smokehouse or meat temperatures remotely and can also be used with a grill or oven.
Hot As Seen On TV Products via Amazon offers it in Black for 65 cents more.