I think being able to slash 50% off your original selling price really says something about just how much you (over)value your product.
A sales strategy used to get more customers doesn't mean your product is overvalued.
Making a sacrifice to widen your customer base is something all companies do, just look at the deals on Groupon and LivingSocial, albeit some companies discount their products to heavily and run out of business.
Or look at Microsoft, free 360s so users will buy games, xbox live, or some may even get a Kinect.
Or Apple, free iPod Touch for students, although not this years, but the student would buy apps, accessories and etc. And the free Mac App Store cards, means another iTunes account and more impulse buys.