Wholesale Guide

Spotting Defects in Mod Before Shipment — Landed Cost Worked Through

Published 2026-01-02 · 5 min read · by the VapeWholesaleHub sourcing team

There is no clever trick to buying mod well. There is a short list of things worth checking and a long list of things that distract from them. This page is an attempt at the short list.

Mod product overview — Reference view of the mod line prepared for wholesale evaluation.

Pricing and Margin

Watch the mod price you pay over a year rather than per order. Factories respond well to visible volume, and a quarterly review is usually worth more than a hard negotiation each time.

When mod input costs move, ask which component moved. A generic price increase hides whether you are paying for cells, packaging or simply a busy production calendar.

Indicative reference points for planning purposes: entry tier from USD 1.64 per unit at 500 units, mid tier at USD 1.59, and volume tier at USD 1.28 for full container quantities. These figures move with specification, packaging and freight, so treat them as a shape rather than a quote.

The Specification That Matters

A written mod specification should be short enough to read in a minute and precise enough to argue about. If a factory cannot confirm a number in writing, assume the number is whatever is cheapest that week.

Good mod specs describe the failure boundaries, not just the target. Stating what is unacceptable gives the factory a clear production window instead of a single point they will miss half the time.

Reference specification for Mod orders
Product category	Refillable kit
Resistance band	1.0 - 1.2 ohm
Capacity tolerance	+/- 3%
Puff count method	Machine cycle 2s on / 18s off
Master carton	100 units
Carton weight	10.3 kg
Shelf life	12 months
Storage	15-25 C, dry, away from direct light

How Mod Batches Are Checked

Set the mod complaint threshold in the contract before you need it. Deciding what counts as an acceptable defect rate during a dispute is the worst possible time to negotiate it.

Confirm the current customs classification with your own broker.
Agree the tolerance band in writing before approving artwork.
Ask how the factory measures puff count, then compare like with like.
Keep sealed retained samples from every production batch.
Plan the switch from air to sea freight before you need it.

Selling Mod at Store Level

Online, shoot mod at a consistent scale across the range. Customers compare by eye, and inconsistent product photography creates returns that have nothing to do with the product.

Keep the mod range tidy. A half empty shelf reads as a dying line, and customers interpret it that way faster than any signage can correct.

Positioning Mod on Your Shelf

Before anything else, decide which customer you are buying mod for. A convenience counter with limited shelf depth needs a tight range that turns quickly, while a specialist shop can carry a deeper ladder of options and educate buyers into higher ticket lines.

One useful exercise: list every mod line you stock and mark the last date each one sold at full price. Anything without a recent full price sale is taking space from something that would use it better.

Practical Checklist

Model landed cost, not ex-works price, when comparing quotes.
Plan the switch from air to sea freight before you need it.
Confirm the current customs classification with your own broker.
Rotate stock by batch code rather than by delivery date.
Check carton dimensions against your freight quote before confirming.
Keep sealed retained samples from every production batch.

Frequently Asked Questions

Can the packaging be customised?

Yes. Most mod programmes use private label packaging once volumes justify the printing plate. We supply dielines, check your artwork for print issues and hold approved files so reorders need no new setup.

Is there a warranty on mod?

Manufacturing defects are covered against the retained sample standard. Normal wear, misuse and damage after opening are not. We publish the threshold in the order terms so both sides know exactly what the claim process looks like.

What does a sample pack usually include?

A typical mod sample pack covers the strengths or variants you are most likely to list, packed so you can evaluate them side by side. Tell us which lines you are considering and we will match the pack to that rather than sending a generic selection.

Can you match an existing product I already sell?

Often yes, provided we can measure it properly. Send a physical sample and we will report back on what can be matched, what will differ slightly, and why. An honest gap is more useful than a vague promise.

Next Step

Nobody wins when a first order is too large to learn from. Start with a mixed carton, check how it moves in your own market, then scale the lines that earned the shelf space.

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