I have had a sonicare ultrasonic toothbrush since they came out, thats about 11 years ago! Obviously i have changed the brush head many times since then! When it came out it was about £100 (I got mine from the sonicare rep at the time for £25! Bargain! They were just out, and were promoting them heavily), the one i have is now about £70ish i think. I have an adaptor to charge it in a different room. The battery is only just starting to fade after all these years! I love my toothbrush, and will get another when it goes to toothbrush heaven!