Oral-B Professional 500 Electric Toothbrush for $69.96 at Woolworths, marked down from $99.95 (30% off)
Another $30 back from Oral-B through their "Smile Triumphantly" cash back offer
Form found at; http://www.oralb.com.au/assets/pdf/12922_O_Olympics_Redempti…
Woolies also have toothbrush heads 30% off
So if you if you missed out on the last deal (http://www.ozbargain.com.au/node/71350) and haven't cleaned your teeth in anticipation on another half decent offer, maybe now's the time :)
EDIT: Shavershop have them for $54.95 ($24.95 after cash back) see other deal @ http://www.ozbargain.com.au/node/74972 maybe if you don't have a shavershop near you and need it urgently this is handy, but even then it is cheaper to get it shipped from shavershop online ($10 shipping)
This deal is still valid: http://www.ozbargain.com.au/node/74972 which has this brush at $24.95 after cashback.
Sorry, no deal.