Amazon offers preorders of Adobe Photoshop Lightroom 4 Student and Teacher Edition for Windows and Mac, model no. 65164859, for $79.99 with free shipping. That's the lowest total price we could find for the latest edition of this software, which offers a variety of photo-editing tools. It's expected to be released March 6.

Of note, you will be required to submit proof of eligibility in order to install the software.