The popular HS100 has been redesigned and slimmed down in this new model - KP105. You can finally use them in dual sockets without any blockage :D
This seems to be the cheapest I can find anywhere.
Compact Design – Fits into sockets without blocking adjacent ones.
Remote Access - Control devices connected to the Smart Plug wherever you use the free Kasa app on your phone
Voice Control – Free up your hands with simple voice commands. Works with Alexa, Google Home, and SmartThings.
Multiple Safety Guarantees – Overheating protection and PC flame retardant material help minimise burning hazards; Sliding safety cover protects children from electric shock
TP-Link - World's No. 1 Provider of WLAN Products within last 8 years. LEADING SUPPORT - Industry leading 2-year warranty and 24/7 technical support
You can also get extra 20% off if you add an Amazon Echo device to your cart - comes down to $15.36 each !!
Get 20% off select Smart Home products when you purchase an Echo device plus an eligible Smart Home product in a single transaction. Add both the items to cart and the discount will be automatically applied at checkout. Offered by Amazon AU.