Would you like Krug or Dom Perignon?

That's the question you'll be asked if you book a first class ticket with Singapore Airlines, ranked 2nd in the list of World's Best First Class [1] airline experiences. Top of the list is Qatar Airways. Despite the luxury price tags attached to first class air travel, one expert states that "it's not a major source of revenue", more of a marketing tool. Something to ponder for business students taking courses in managing luxury goods and services.