Where you can purchase a bottle of glenmorangie cellar 13 whiskey from please help?

I bought a bottle at the Heathrow Airport in London.. sadly haven't been able to find available online yet. still looking though.

[Improvement 8/2/10]

Cellar 13 is only sold at the Glenmorangie Distillery in the Royal Burgh of Tain, Ross-shire and at (British?) Airports. Cellar 13 is from the warehouse closest to the sea, by the railway line, and the Scotch matured in there has different characteristics. I believe it is matured in ex-Bourbon casks. Cellar 13 is also positioned so that it protects the other warehouses from the worst of the weather off the Dornoch Firth and the North Sea.

Glenmorangie is pronounced to rhyme with orangey, not Glen-morr-angie.

A visit to the Tain distillery is highly recommended! (Take the train from Inverness, which is about £13 return and takes about an hour, and you are free to taste all the Excellent samples without any worries.)