Marketplace
So, Goldway has an ~Au$228 offer for Xiaomi's Max 3 (4 GB + 64 GB) for which a patient buyer can choose a lower shipping fee of ~Au$ 7.74
Now change to the (6 GB + 128 GB) version of same phone in same colour.
You won't find that low shipping fee, for the higher-price phone.
I doubt the larger RAM + ROM sizes add much weight to the package.
But they demand ~Au$ 21 (almost 3x as much for the more costly version!
Carbon Tax? Subtle Wealth Tax? What?
Oy!
Their right to charge what they like. They may have a lot of stock of one item and little of another?