@shiranissosexy Got the Diamondclean here last year, $99 for 1 w/3 replacement heads. I love it, but these are 1/3 the cost each. Of course, I have no idea how much lower quality they are than the Diamond.
I’ve just been using this kind of toothbrush. I get refill heads from A m a z o n and it takes 1 AA battery every so often, so I don’t have to take up a bunch of counter space with a charging cradle. The dentist said my teeth look good, so it must be working OK. They only cost $7 or so.
IMO it looks like 2 brush heads (they probably consider to be standard), and one bonus one they throw in (that they maybe consider to be premium).
BTW if you get any of these powered toothbrushes, always be on the lookout for sales on the heads. I’ve been able to find them in the sale bin for 50%+ off at Kroger a couple times a year. If you have to buy them at full price they are very expensive.