Given how much the cost difference typically is between India and the U.S., doing it in the U.S. at only a 50% premium is pretty impressive IMO. Wages alone are so much higher here that I would've expected a larger price tag.
That's to be expected, a dollar in India goes much further than a dollar in the US. https://data.oecd.org/conversion/purchasing-power-parities-p... says a dollar in India can buy you about 23 times as much stuff as that same dollar could in the US, although I'd expect that number to drop significantly for highly technical projects like a moon landing.
Price difference applies only to wages and other non-portable costs. The prices for products and commodities which can be easily moved are roughly equal on global markets due to arbitrage. You can't get the raw materials or computer chips any cheaper in India.
I might be wrong, but from my research it seem like they did this with $118 million paid by NASA. India did it with around $74 million, for reference.