On special all over town, with Pak N Save the lowest at $14.99. Local Pak N Save was out of stock but Mitre 10 price-matched and hence $12.74. Cheaper than getting a refill!
Mortein Indoor & Outdoor Prime Multi Insect Automatic Spray 154g $14.99 @ PAK'n SAVE, Westgate ($12.74 via Pricematch Mitre 10)
This is part of Black Friday / Cyber Monday deals.