I've tried to email Mr. Dring a couple of time now with no results. Is there anyway to purchase some of the kit, slide, or any products he has developed?
Yes, Inventables is planning on selling more. The first batch will be going out soon.
I think the holdup has to do with international shipping. Different countries have different max lengths.
edit: There is a possibility of preordering an ORD Bot mechanical kit if you and 84 other people do so in the next 2 weeks. Unfortunately it's BYO electronics/extruder.