Actually the Ardbeg 10 can normally be found for below $55 Cdn. in Calgary - for example the listing at Kensington Wine Market shows it at $52.99 (+ tax) ...
http://www.kensingtonwinemarket.com/sea ... se&r_id=10
I would think Cloud Nine (at the airport) would be close to this in price... and I recall seeing it cheaper still at OK Liquor.
If you can't make it downtown to Kensington - or south of the city to Willow Park (two worthy visits) - then here are some locations in the NorthWest area that would be on the way from the airport as you head west to Banff.
1. Crowfoot Liquor Store (very good selection)
7422 Crowfoot Rd NW 201, Calgary, AB
2. O K Liquor Store
250 Crowfoot Cres NW 4, Calgary, AB
3. Olympia Liquor Store
400 Crowfoot Cres NW 1, Calgary, AB
4. Safeway Liquor Store
65 Crowfoot Cres NW, Calgary, AB