The cost would be approximately 50-75% lower when compared to equivalent hourly costs payable in developed markets like the USA, UK, etc. If you include overheads like office space, staff benefits, health insurance, etc. then outsourcing to India can save companies even more.
The cost would depend on the business process, shift timing, number of FTEs, skills required, etc. but basic tasks like data entry can have hourly rates starting from $4.