There are some consultancies in India who hire an independent consultant to do the hiring. One such company called Gigatude approached me for hiring. They offered me Rs. 500 (~ $8) for taking one interview. The interview should last roughly 30 minutes. I did some digging and found that there is indeed a market for experts taking interviews. The going rate for taking one interview is roughly Rs. 5000 (~ $80). It is a good approach to take. I will also appreciate if somebody starts a company to formalise this arrangement.