Need courier forwarder from USA/Europe to India

I need to get couple of products from USA. I am basically looking for package forwarders having cheaper shipping charges, would prefer sea shipping to for heavy items to reduce the cost. Along with that, I need better custom clearance service.

I have tried Aramex shopandship and lmao. They evaluated the duty for 2500 worth phone (available in india at 6000) at 18000 INR and asked me to pay duty more than the price of phone.

Presently, I am using a forwarder who charges over 50$ for 1.8 kg and 100$ for 6-7 kg. It is via postal service so there is no volumetric charges. Their shipping charges are too much especially for lower value item.

Borderlinx/Ppobox etc will cost to much for volumetric.

What all options are available for cheaper price and who can accept the invoice and doesn’t inflate the price while custom evaluation.