We were on that cruise a year ago Aug.. summer of 2000. The price I believe was right around $185, if I recall. The entire tour from ship, to heli pad, to glacier and back to the ship was around 4 1/2 hrs.
About 1 hr flying time, and a couple of hours on the glacier. The sledding was maybe 45 minutes or so.
I'd do it again in a heartbeat!
Regards,
Kuki