I run a fairly small site. We're upto around 7 million hits a month, still pretty tiny. Our costs right now are fairly low, but recently I made a post inquiring

I run a fairly small site. We're upto around 7 million hits a month, still pretty tiny. Our costs right now are fairly low, but recently I made a post inquiring how to cluster efficiently, because we needed more bandwidth available (And we were going to use a few 10mbit servers). Someone suggested that we use s3. This would've tripled our bandwidth costs. This is why I believe it's expensive.