Great buy on Amazon or Costco. Having one myself, I’ll tell you to get the generic replacement heads rather than the name brand ones. Same shit but MUCH cheaper.

Example (I got these myself):

https://smile.amazon.com/gp/aw/d/B06XSKXFX5?psc=1&ref=yo_pop_mb_yo_pop_mb_pd_t2

(I’m very into the world of saving money on literally everything I buy.)