I was shopping the Microsoft Store for a copy of Word 2010. At the top of the page, they sell "Word 2010" for $139.99. At the bottom of the page they sell "Word Home and Student 2010" for $119.99. The details and product descriptions for both versions look exactly the same. There is a similar situation where "Home and Student" versions of Excel and PowerPoint are offered with no easily identifiable differences in features.
So what is the $20 difference between these two programs?