Not the cheapest but a decent price for this Thermos 1.2 L Stainless Insulated Flask. Make sure it 'Ships from and sold by Amazon AU'.
Product link
Thermos vacuum insulation for maximum temperature retention, hot or cold
Durable stainless steel interior and exterior
Twist and pour stopper helps to pour without removing the stopper
Cool to the touch with hot liquids, sweat-proof with cold
Insulated stainless steel serving cup
It’s normally around the $40 mark, not $65