It's almost Thanksgiving, and many online retailers have already started offering Black Friday pricing. MacMall.com's Pre Cyber Monday sale includes the 21.5-inch iMac with a 2.7GHz Intel quad-core i5 processor, 4GB of RAM and a 1TB hard drive, it was $1499, now $1399 after a $99 price break. Plus until January 31st, get a FREE upgrade to Mountain Lion and save $49.99 on Parallels Desktop 8 for Mac. Also at MacMall.com is the Memorex XtremeMac Luna dual alarm clock with detachable speaker for iPod and iPhone has seen a $90 discount from $129.99 to $39.99.