Oh, I agree. Those are the numbers for the iPhone on AT&T in the US, which is a ripoff and doesn't include any texts in the basic $55 plan.
http://buyiphone.apple.com/ipa_preauth/content/catalog/att/If you are a heavy texter, there are much better plans on other carriers. For instance, Virgin Mobile has unlimited text and data and 300 minutes for $25 a month.