If you haven't already used your AMAZON20 coupon, you should be able to get the new Oral-B Pro 2 2000 for $64.99 delivered.
Otherwise it is $84.99 which is neither here nor there.
Review: https://www.dentistryblogger.com/oral-b-pro-2000/
https://www.dentistryblogger.com/oral-b-pro-2000-vs-3000/
If you have used your coupon, you can try creating a second Amazon account with different email address and phone number and credit card (and try use the coupon again!).
Combine with this deal to get cheap brush heads:
https://www.ozbargain.com.au/node/378388
Up to 100% more plaque removal
Hmm…