[iddqd]

  External outgoing traffic
  First step up to 75 GB: 0 € per GB
  From 75GB to 499TB: 0.01 € per GB/month

Am I missing something?

[byefruit]

Yes, you're reading the object storage traffic section.

The servers themselves come with unlimited transfer.

[Hamuko]

That's object storage, not the servers. AFAIK, Scaleway has unlimited server traffic.