What I wanted to question was whether those huge up-front expenses needed to design and manufacture a new kind of laptop were worth it. I mean even if you had to pay $200 on ebay - you'd have virtually zero fixed costs.

Perhaps that project just does not need to scale down.

Sure the XO is a nice piece of equipment. I would even buy one myself for 100$ if it was available on the market. (Besides I'd really like to try a crank to power my computing - but it's does not come with the normal XO, or?)