Why do 2 sellers ship the same product — but one pays ₹58 and the other pays ₹132?

This is one of the biggest shocks for new eCommerce sellers.

Same product. Same city. Same courier brand.
Still, shipping cost can be completely different.

The reason is: shipping rate is not only about weight.

In most cases, sellers only check “500g / 1kg rate” and assume that’s the final cost.
But actual cost changes because of things like:

• pickup pincode
• delivery zone
• volumetric weight (package size)
• COD charges
• fuel surcharge
• remote area / ODA charges
• RTO risk on that lane

So one seller may be shipping a compact package in a strong service lane, and another seller may be shipping the same item in bulky packaging to a difficult pincode.

That’s why the rates look “unfair” — but actually the billing logic is different.

This is also where many sellers feel confused with aggregators/couriers because they compare only product weight, not chargeable weight + zone + surcharges.

Honestly, once you understand this one thing, logistics starts making much more sense.

A lot of shipping cost problems are not because your product is heavy —
they happen because your packaging and shipping lane are expensive.

If you’re a seller, always check this before judging your shipping cost:
Dead weight vs volumetric weight + destination zone.

That single check can save a lot of money.