In the past the best way to get replacement wheels was wait for the sale and buy a new trolley with 2 wheels, as the replacement wheel on its own was $16+
This weekend the wheels are over half price at $7 each (Bunnings have similar for $10 plus )
Trolley also on sale 25% off.
https://www.supercheapauto.com.au/p/sca-sca-hand-trolley-pne…
Don’t forget a further 8% off with eGift card at Suncorp benefits
SCA web pages show 27 Oct as the end dates. Where did you see 20 Oct?