It depends on if you're bringing it in house, or renting a server someplace. I've found that if you are renting a dedicated server, you can get insane bandwid

It depends on if you're bringing it in house, or renting a server someplace. I've found that if you are renting a dedicated server, you can get insane bandwidth deals, but if you try to bring it in-house, or even colo, you get burned. The dedicated hosts aren't expecting that you actually use the allocated bandwidth- This is why they'll give you 1000GB for the standard cost, but charge $100 extra to bring it to 1200GB.. If you need to bump it, it shows you're actually using it.