Amazon sells it for around $50 and additional brush heads for around $10 each. This particular version has a 4.5 Star rating and over 500 reviews. I didn't compare it to the latest version, as I never considered it and refuse to pay $100 for a toothbrush. Be sure to select Amazon's "frustration-free" packaging. Otherwise, it comes sealed in that awful encasing that is impossible to penetrate and you have go find scissors and then you get impatient and reach in and try to pull it out and cut your knuckle on a sharp edge and don't realize it until you see blood on your white duvet cover where you go to sit crossed-legged while you open packages. I immediately threw away the little plastic stand for additional toothbrush heads. I won't be sharing my Sonicare with anyone and if a tooth brushing/sink sharing companion does come along, he can get his own.
The experience was riveting. Life changing. I cannot believe you manually brush.