(I bought from juno in the UK, not the fault of this site at all!)
A late reply, mainly as I missed this thread.
When I checked their site (I am always looking to hoover up cheap B-Stock modules), whilst they sell the case, the power supply, patch leads and the Master modules, as well as a decent selection of modules, they don't sell the ribbon cable. So building a system that way is never going to work.
I agree that a Dealers' guide might be a good idea. If someone is buying from Robert, he would doubtless spot the error, but a dealer probably wouldn't. Sadly, most just sell boxes. Juno are quite good, I do buy from them, but visiting their shop is an exercise in problem-solving. Just getting let in is fun. I've tail-gated several times through the outer door (with some odd looks), but the inner door is much more fun It's not in the best part of London, and I'm a born and bred native - and not very shy and retiring.