No, it is free to use!
Google Buzz is free. All you need to do is to create a Google account.
Not all but some of the add-ons are free of cost. You can use them without paying anything.
It won't cost anything. It will never cost anything to use.
Free of cost
Google maps are free to use for finding driving directions and distances from one location to another. Google maps also provide street level views which can be very useful for reviewing neighborhoods when comparison shopping for purchasing a new home.
WikiTree does not cost anything to use.
Ahscrump!
It used to cost $5 to download the wii internet, but now it is free to download and free to use.
Type anything into the address bar and when the results show, click on the google logo.
You can use Google Adsense and Google Adwords. Advertising on GMail would cost you heavily.
It does not cost anything to the Internet website, MySpace.
If I were a classroom teacher, I'd use Google Docs because of their price performance: No cost, and adequate functions for use in the classroom.