The listing, Microsoft Office Mac Student & Teacher 3 license edition has ended.
*CONDITIONAL FREE SHIPPING OFFER: If you use GIN, the shipping is FREE. If the winning bid is over 2000, the shipping is free. Otherwise, the shipping is a flat-rate $3.00.
Up for bids: Microsoft Office Student & Teacher Edition for MAC - 3 user licenses
This is the 3-user version meaning that it can be installed and used on up to 3 computers at a time. You must be a teacher, student or have a teacher or student in your household to legally use this version. It has Entourage, MSN Messenger, Word, PowerPoint and Excel.
NOTE: The terms of the licensing agreement are here: http://www.microsoft.com/download/en/details.aspx?id=16493