Bestbuy offers ThermoPro - TempSpike Lite 500 ft Wireless Meat Thermometer for $29.99 (reg. $44.99) with free shipping. 

Product Description:
Say goodbye to hovering over the grill and hello to 500 feet of wireless freedom. The TempSpike Lite's dual-sensor probe monitors both your meat and cooking environment at once, sending real-time updates straight to your phone so you can stay in the conversation instead of stuck at the smoker. No cords to tangle, no guesswork, just an intuitive app that alerts you at the perfect moment. The result? Consistently juicy meals and more time doing what you actually came outside to do.