You also need to consider the logistics and customs requirements for your business.
For example - freight costs are determined by the weight and dimensions of the cargo to be shipped. So you need to think about what items you will choose to ship and how you will present them for shipment e.g. complete items or broken up into pieces.
I presume you would be considering seafreight - you can choose Less than Container Load (LCL) or Full Container Load (FCL). Each has a different cost build up but would include, delivery cost to port of export, loading into container, moving cargo around the port of export, loading onto the ship, documentation, unloading from the ship, moving cargo around the port of destination, unloading the container, documentation, delivery to final destination.
You need to decide your delivery terms e.g. will your selling price include delivery to the customer's premises in India or just to the port of export? It is usual to indicate this by using an INCOterm. Take a look at this web site en.wikipedia.org/wiki/Incoterms for information.
INCOterms make the seller's and the buyer's responsibilities clear.
You will also need to consider import duty, tax and administration costs at import. Take a look at these web sites for further information www.cbec.gov.in and www.eximguru.com/indian-customs-duty. Import duty is determined by the nature of the items being imported e.g. copper wire or tin sheet. Each product has a different percentage of import duty.
If you would like to discuss the above further please do not hesitate to contact me.