Colgate Sensitive Pro-Relief Sensitivity Relief Pen + Sensitive Toothbrush was $19.99 now $4.
Not sure if it's a nationwide clearance item but plenty of stock left at Glen Waverley Woolworths.
More information about the product can be found here: http://www.colgateprofessional.com.au/products/colgate-sensiā¦
This product is such a gimmick - no wonder its on clearance. Don't mind the brush though.