newegg offers the Adobe Photoshop Lightroom 4 Student and Teacher Edition for Windows and Mac, model no. 65164859, for $79. Coupon code "TVK3THVT" cuts it to $29. With free shipping, that's $14 under our mention from two weeks ago and the lowest total price we've seen for this version. (It's also a current price low by $8.) This program offers a variety of photo-editing tools.