How do you penetrate deep enough?

It's marketing plan time and budget time here in the corporate world. Trying to figure out where the next big Tuna will come from.

Will it be Seoul, Korea with the most vacation time of any country and one of the highest per capita income at $16,000 USD per household?

Will it be the Russian market who are benefiting from the quick rise in the price of oil and celebrating their new freedom?

Will it be the massive economies of India and China with nearly 1/2 the earths population between them, they are traveling and spending money if only the top 5%, which translates to 120 million people.

So how do you penetrate deep enough? How much money do you spend and what do you do to get them interested in you?