Metene via Amazon offers its Metene Medical Forehead and Ear Digital Thermometer for $29.99. Coupon code "F4QA42RH" cuts that to $15.89. With free shipping, that's the lowest price we could find by $23, although it was $2 less last month. It features a small LED-backlit LCD with green and red colors to indicate temperature range. Deal ends April 30, 2018.