OpenOffice doesn't cost a thing. It's FREE and easy to install. Download it from the Internet, no need to shop. Some years ago, I tried OpenOffice, hoping to stop buying expensive copies of Microsoft or Lotus programs for spread sheets, word processing, presentations, graphics and data bases. I liked OpenOffice, but it was somewhat clumsy and the documents weren't compatible with other people's software.
I've been experimenting with the latest iteration of OpenOffice and can't find much to complain about. No one has trouble opening docs I email. The interface is intuitive and totally user-friendly. I couldn't ask for more functionality....