Fetch, if it's any cheaper I could use a few myself, but what's the deal with the male fitting attached to a cable? I'd rather not have to splice the cable...can we get a male fitting that you attach to the cable yourself?
I'd probably go for something like 3 pairs, including the plastic locking ring.
I assume this locks the connection together so you don't loose the canister if it slides off your harness.
BTW, one advantage of this kind of thing is that if you flood the canister it won't affect the light. In a standard setup the water has a tendency to travel up the cord.
There were some rumors about poor connections, but a buddy of mine has this setup and hasn't had any problems.
Have you checked with EE to see how much they charge for their connectors?