I think the way fees are structured vary a great deal from professional to professional as well as geographically. Did you end up doing your design in the U.S?

I think that if you're designing a home in the US and want it to look American, it will be well worth your while to have an American designer working on the project. But if you're designing something in India and want it to look Indian, then I would select an Indian designer.

The average design fees per hour in the US, according to a lecture I attended recently, are $80 to $120 per hour. You may get a better rate by asking for a package price, also according to that recent lecture. Design styles in the two countries are vastly different, though both beautiful.