I supposed that the demo site might allow me to add to cart. There's no way to do that, no evidence that there's a cart, no buy button. I was amused to find my way to http://demo.commerceguys.com/dc/admin/reports/updates, which lists Drupal Commerce 7.x-1.1 'Security update required!' uh, perhaps. I'm willing to believe that the ability to navigate to Administration » Store » Products type stuff might be deliberate, I can explain further if it isn't. I'm a newbie I don't know what to make of this demo, perhaps it was put up 10-20 months ago, and nobody looks at it, can't say why nobody's already posted these points? Also, I'll throw down that previously, I was goofing w/ubercart. I'm very open to commerce and this is a plausible-looking site. But where do I find a working demo of anything on the net? You're in good company, I suppose.