Hi! Robertwhite & of course the flash center has them. Dont know of any great "deals" though since they are so new still.
Well I found a set up, on the Elinchrom Ranger Quadra Complete Set S, but of course there would be more features I would need to add pushing me over the £1500 mark. It basically comes with power pack unit, battery, charger, 2 S heads, 2 connecting cables, hard case.
I looked more into the timing on the travelpak, it can do upto 750 shots on a single charge, which sounds fairly impressive. The timing is fairly slow, can I deal with it?
400w I would be looking at 4 second for 1 head and 8 seconds for 2.
500w pushes it up to 5 seconds 1 head and 10 seconds for 2 heads.