Hmm, what you require looks similar to another thread from yesterday. Meh, I'll copy and paste from there:
The real cost (i.e. not from resellers) of 1 terabyte of bandwidth per month would be well over $40 per month (and that's just the bandwidth..)
If you need that much bandwidth (oversellers won't physically be able to provide all that by the way; you'll get suspended within days), I'd suggest you go for a dedicated server with VolumeDrive - their servers come with a 10 Mbit unmetered connection, hence you could get 3.3 terabytes of bandwidth per month from that. And their servers start at ~$65 p/m (with cPanel) which is quite cheap for 10 Mbit unmetered.
Anyone that replies offering you this deal for under $55 p/m would be lying - they wouldn't actually let you use all that space and bandwidth.
Feel free to ignore me here, although what I say is 100% the truth.
If someone does offer you this package for $10 per month (etc, or even, as I say, under $55 per month), they'd be lying to you.