Shipping is the marketplace seller's biggest cost after commission — and the easiest to optimize. A seller who doesn't understand volumetric weight quietly loses money on every package.
What Is Volumetric Weight (Desi)?
Carriers charge on the greater of two values:
- **Actual weight** (kg)
- **Volumetric weight** = (W x L x H in cm) / 3000
Example: a 40x30x20 cm box = 24,000 / 3000 = 8 desi. Even if the product inside weighs 1 kg, you pay for 8. For light but bulky products (pillows, toys, plastics), volume writes the bill.
What Matters in a Carrier Deal
- The volumetric divisor — 3000 is standard; e-commerce deals may differ
- The tier table — where your product range concentrates is critical
- Return shipping fee — who pays and at what tariff
- Undeliverable package process
- Pickup time — determines your same-day-shipping badge
Cutting Volume Through Packaging
| Tactic | Effect |
|---|---|
| Poly mailer instead of box (where suitable) | Often halves the desi |
| 2-3 standard box sizes matched to products | Stops shipping air |
| Vacuum packing (textiles) | Cuts volume 50-70% |
| Folding foldable products | Drops one tier |
The Customer Side
- Dispatch speed is a core component of your marketplace score
- Adding our [package tracking tool](/arac/kargo-takip) link to order notes reduces customer questions
- Always include a return-address label
Hidden Line Items
- Address correction fees
- Return-to-sender fees on undeliverable packages
- Insurance on declared value
Audit your monthly carrier invoice line by line; systematic errors like wrong volumetric measurement are refundable on dispute.
The Formula
The order of shipping savings: shrink the package first (volume), learn your tiers second (contract), switch carriers last. Most sellers do it backwards and leave money on the table.