100% IsoPropyl Alcohol 5 Litres
Use coupon for 10% discount, bringing it down to $23.40
Delivery for me in Melbourne was $7.91 using Courier Please option. Free pick up from Penrith, NSW.
Edit: For Melbourne (possibly other states with high shipping cost), try Melbourne Solvents. Similar/lower pricing with 10% welcome discount and free pick-up in Hallam. Also the delivery is circa $10 within Melbourne.
People dilute it down from 100% to 70% because the 30% water acts as an agitatent or whatever and actually cleans better than 100%. But there's definitely use cases for 100%. It's easy to dilute yourself so 100% is best to get.