Avgas is getting harder and harder to get here in Indo and the last 6 drums I bought it was approx. A$2.60 litre in 2010 at the Pertamina depot at Halim Airport in Jakarta , double the price of Avtur . Piston engine twins are all parked here and being sold off or already rotten as nobody uses them for charters anymore due to the logistics of getting avgas , it can take up to 2 months to get fuel delivered to some areas and the price can be $5 to $10 litre for remote areas by the time it's transported.
Flying schools are running on 75% auto fuel 25% avgas blend and there's been a lot of problems with auto fuel quality.
It's pricey in Oz but at least it's available