My partner and I are planning to attempt Robson's North Face this August. If it's not in condition, we'd attempt the Kain Face. We're considering using Robson Helimagic to fly into Berg Lake or more likely Rearguard Meadows (between Rearguard and Waffl, kind of near the Extinguisher Tower). I called April 11 and was told that for up to 3 people, it's $314 per person to fly into the lake and $439 per person to fly into Rearguard Meadows. ($514 for the Dome, but we're not doing that). The price is significantly less per person with a party of 4 ($100-200 less pp, depending on the destination). Flying into the top of the Dog Buttress costs the same as Rearguard Meadows, but I had to draw the line on cheating somewhere. Rearguard Meadows (and the lake, of course) can provide access to either the Emperor/North Face and Kain Face.
I was told that the helicopter picks you up at a car parking pulloff about a kilometer from the trailhead. Alternately, it might be possible to arrange a shuttle.
We fly into Calgary on August 5. We would try to fly into Robson as soon as possible after that. If the second week of August works for your schedule, we're keen on sharing the cost of a flight. They make an allowance for about 260 pounds per passenger, body and gear inclusive.
If this interests you or anyone else reading this, let me know.
brianaabram at gmail dot com