Not only that, but Australian ISPs usually pay 100% of the cost of their links to international peering points, and these costs get passed on in the form of quo

Not only that, but Australian ISPs usually pay 100% of the cost of their links to international peering points, and these costs get passed on in the form of quotas and tiered plans, sometimes with separate quotas for international traffic. AARNET, the Australian Academic network definitely included differential pricing for international traffic that it passed onto universities when I was in college.