On Hetzner and with their €1.00 per TB after 20TB included, you can pay up to €324 per vps as you are limited to 1Gbps if you fully saturate the link all month.
I doubt you'll manage to get the exact 1Gbps per VPS out all month. On dedicated that's more likely. But luckily they have a very easy setting for billing alerts and maximum in the settings page.
