I see a lot of ads online, also on Ebay, where people are selling software. Software that came along with original equipment, but was never opened.

There are very good deals available, but they sound too good to be true.
Here's an example of one ad.

I have an ORIGINAL UNOPENED OEM version of Microsoft Office 2007 Home and Student Edition. I bought it through Dell with a laptop but I don't need this software. It is BRAND NEW and never been opened - the plastic covering is still sealed. It is perfect for students or adults that need to use any of the following programs:

Microsoft Word
Microsoft Powerpoint
Microsoft Excel
Microsoft OneNote

It retails for $149.99 + tax at Best Buy. and I'm asking for only $100. You're saving about $60 by buying from me instead of Best Buy. At this price, it won't last long!
http://www.bestbuy.com/site/olspage....=1158320998618

If you're interested in buying it, e-mail me now and leave your number! Thanks for looking!

*** Just to make it clear, this software is BRAND NEW and NEVER BEEN OPENED! It is factory sealed and comes with original registration code. It is an OEM version.
Are such sales legal? Will there be a backlash from the software manufacturer?