$45 at Woolies = $2.81 per replacement head.
Found these at my local Woolies. I've been eying these bulk packs on Amazon, was ~$52 but OOS for now
Annoyingly the sensitive ones are not discounted.
Addit: as per below, some have price beaten with Chemist Warehouse to $42 👍🏼
Do these fit on the Oral B SMART 1? Is there much difference from "Everyday Clean" to the ones that come with the which is the "Oral B Crossaction"