Mukesh Ambani is building a $1 billion home for himself in India. I guess there is not yet a housing slump in India.
I did a quick calculation at Bankrate.com, and found that if he had a 30-year fixed mortgage on the property with an 80% LTV, his monthly mortgage payment would be $5,322,419.
My guess though is that he doesn't. But that sure makes me feel better about my payment on the Pratt Mansion.