Just so you know after introductory prices a few years ago it was cheaper to have the "basic" cable + internet than just internet from comcast. It may have changed since I don't live in their service area anymore.
This is the case still, at least it is for me. Comcast recently added two more straws to the camel's back though: a new "broadcast fee" for the "cost" of carrying broadcast channels, and encrypting even basic cable so you need another stupid box.
ATT Uverse is now available in my area, their internet is a little more than half what I'm paying for Comcast Basic + Internet, and since I can't watch the TV anyway because I refuse to use their box, I don't need any TV component of the service. I've heard mixed stories about Uverse but they seem to do better than Comcast in the Netflix rankings so I'll probably give them a try.
It's the same way for us (by about a dollar, I think). It used to be cheaper by almost $3/mo, but last year they raised the cost of "ridiculously basic" cable.
We don't even watch the cable TV that we "pay" (-$1) for, as our actual programming comes in via (free) over-the-air antenna mounted in the attic and recorded onto 2 TiVos.
There's a reason for that. Certain content providers (HSN, for instance) pay Comcast on a per customer basis. Comcast makes more money when you have the lowest tier TV package and it doesn't cost them anything.
