Lots of dedicated hosts will include a 2-5 TB of transfer a month for $100-500. Media temple will sell 1TB chunks on shared hosting for $20/month. I've seen d

Lots of dedicated hosts will include a 2-5 TB of transfer a month for $100-500. Media temple will sell 1TB chunks on shared hosting for $20/month. I've seen dedicated hosts that price bandwidth above their included allotment at $500 per TB. You can also buy based on peak bandwidth. You'll see quite a range depending on business models, peak transfer caps, etc. Mediatemple, for example, is clearly hoping that most people will never need their full allotment, and when they do, they only need it occasionally.