[kiwijamo]

Same here in New Zealand too. Cloudflare peers only with certain ISPs. The ones they don't peer with sees some traffic (e.g. sites on free plans) routed to offshore Cloudflare POPs around the world instead of local Cloudflare POPs. I understand if the website is on a paid plan they will be more likely to route to a local POP (incurring more costs in doing so).

[celsoazevedo]

According to this 2016 post, the problem is Optus and Telstra, and the costs of peering with them (scroll down to "Oceania"):

https://blog.cloudflare.com/bandwidth-costs-around-the-world...