Well, it will be difficult for me to give any numbers now but I assure you it will be cheaper than any service. A lot of money is saved by using sea routes which will be a big benefit minus shipping time.I doubt he will be able to do it as this is kind of bulk shipping, he has ways to get it cleared with minimum duties and such and not pay full applicable duty.
I am planning to order a mouse for which I have been quoted Rs. 1000 / 1100 over the mouse price (which is $31.65 inclusive of local US taxes). So total is around 3400 Rupees landed cost for me which is better than what I paid to I2C world 2 months back (4100 rupees).
It would good if there are some ways you can give ballpark numbers for certain commonly ordered items as during sales like black friday, if you are not accessible, one can just place order to your residence and know beforehand that the final price may be approx X amount.