Hi,
Usually small parcels which are low in value are cleared wihout any customs duty. However since it shows handed over to customs the situation is dicey.
It all now depends on the offer assesing your product. If you have the time, you can visit the EMS customs office near domestihc airport and speak with the customs officer.
Currently the maximum rate of customs duty is 26%, so that would come to about Rs.2000/-.
I have an agent who handles EMS post and will charge about rs.1000/- as agency charges, if you are interested, do contact me.
Devesh