The last time I bought an electric toothbrush, I paid $80, and I thought that was expensive.
Brush heads are only $15 each:
iO Series 9 Electric Toothbrush, White Alabaster
The Oral-B's iO Series 9 in white color utilizes powerful, but gentle micro-vibrating bristles. Experience the WOW of a professional clean feel at home.
oralb.com
...3D Teeth Tracking and AI Recognition use an interactive color display to help guide you to your best clean for all areas of the mouth....... The frictionless, smooth magnetic drive system transfers energy to the bristle tips for a clean that wows.
Brush heads are only $15 each:
Oral-B iO Ultimate Clean Replacement Brush Heads, 2-Count, White
The Oral-B iO Ultimate Clean Refill Brush Head in white reaches deeper between teeth and removes up to 100% more plaque along the gum line for healthy gums.
oralb.com