£35 @ Boots
Just bought this and pretty sure this is the cheapest i could find! (I'm sure i will be told otherwise if it isn't!!)
Calpol has been treating fever in babies and children for over 40 years. The Calpol Digital Ear Thermometer is one of the most accurate ways to take your baby's temperature and helps to identify a fever. Features: Fast and accurate temperature reading in one second, Gentle and easy to use, Fever alert, Illuminated display (night glow), Measures in Fahrenheit or Centigrade, Auto display memory, Hygienic Probe Covers, Suitable from birth.