Free.
These Artcraft apps seem to work on Linux completely fine, at least with the bit I've played with.
I don't really use MS Office for anything but Excel since I don't really do WYSIWYG document editing and even if I did I probably would use LibreOffice or OnlyOffice or something. LibreOffice Calc just kind of sucks as of right now.
“Your scientists were so preoccupied with whether or not they could, they didn’t stop to think if they should."