You'll see a second line for bandwidth, that was a special deal for crawl bandwidth. Larry had convinced the sales person that they should give it to us for "cheap" because it's all incoming traffic, which didn't require any extra bandwidth for them because Exodus traffic was primarily outbound.
This shows that there's more to being a successful business than just good code; you need to know how to run a business, too. How many people working on web search ranking would ask for a special pricing exception from their bandwidth provider and get it? The answer is, apparently, one.