Your comment doesn't match what's written on the very page you quote: https://upcloud.com/fair-transfer-policy

> Even if you exceed your monthly share, don’t worry, there are no excess fees. We will simply notify you of reaching the fair transfer policy and may reduce the bandwidth of your Cloud Servers to 100 Mbps for the rest of the month.

EDIT For completeness, there is also:

> If you believe to require more transfer per month than the Fair Transfer Policy provides, you may opt in to a paid transfer model at €0.01/GB. This affords you completely unlimited egress with no restrictions.