360 kiosk demo discs "The Experience Disc" (not OXM discs)

so i got a grip of these discs

The Experience Disc volumes

1.4
1.5 v3
1.6
2.0
2.1
2.3

and so on. Can anyone tell me about them? I can't find them on eBay so I dont know the value. Are there people that collect them? They aren't available to the general public.

I think the discs will run on any 360 but will turn it into a "demo unit". What that means, or what it does, Im not to sure... But I would do some research before putting them into your disk drive.

And I think they are supposed to be property of MS so I dont think you will be able to sell them to anyone but an extreme MS fan?!?

Do they disable any other features, as far as you can see I mean. I was just under the impression that putting one of those in your 360 will seriously mess it and the harddrive up. And by mess up I mean make it useless to the average user.