Shoes or Elliptical?

I was reading a magazine and was fascinated with a pair of shoes which the company claims to provide many benefits, one being burning the calories forty-six times more when working out activities while wearing this pair of shoes. And the cost? Let's just say it is comparable to one of the many discounted ellipticals at NordicTrack.com

Now would I get a pair of shoes or an elliptical? True, I can wear the shoes anywhere anytime, but when it comes to resell value, definitely the machine, right? On the long run, I may be able to quit my mini workout altogether too. Hmmm.... definitely worth thinking.