I've read every page of this thread and I'm still confused about a few things... 
Firstly am I correct that the fully assembled kit does NOT include a case or fan?  In which case I would need to work out a mounting/cooling option myself?
Secondly, with regards to powering them, if I only want to power 1 or 2, would I be correct that this can be done from a PSU currently powering my desktop, i.e. pull one of the PCI-e power cables out the back and extend it as necessary to reach?  Has anyone thought about any standalone powering options other than an ATX PSU (which is overkill for 1 or 2 boards)?
Lastly, on the hosting option, is the 8% cost a percentage if the initial purchase price, or 8% of mining income?  Do you have any more details on hosting as I am quite interested in this!
TIA!