By comparing the product prices between 2 chemists/pharmacies, TerryWhite Chemmart is the cheapest. It is $1.00 (6 %) cheaper than next price leader (Priceline Pharmacy).
The current price at $14.99 is $1.00 (150 %) more than the historical cheapest price of $5.99 recorded on 26 Apr 2018.
The price discount recorded on 19 Jul 2018 is part of TerryWhite Chemmart's "Healthy Savying This Winter" promotion campaign which start from 19 Jul 2018 to 7 Aug 2018
You may want to consider similar and cheaper product Strepsils Plus Anaesthetic 36 Lozenges can be found at ebay Australia at $12.55.