Cheapest I've seen it right now compared to below.
- Xbox Store has it for $52.47.
- Big W & JB HI-FI has it for $59 for both consoles.
- EB Games has it for $68 for both consoles.
- Harvey Norman has it for $78 for both consoles.
- Target has it for $79 for both consoles.
Amazon has it for $39.95 as well
https://www.amazon.com.au/Codemasters-GRID/dp/B07SFNK9N5