Storage fees on aged fulfillment inventory work like a slow leak. Individually the charges look small enough to ignore. Cumulatively, on units that aren't selling, they can exceed what the goods will ever earn — and because they're deducted rather than invoiced, most sellers don't feel it until it's substantial.
How the Cost Compounds
Two things stack. Base storage charges accrue on everything held. Aged-inventory surcharges add a penalty layer on units past defined age thresholds, and they escalate the longer stock sits.
The structural problem is that the surcharge hits the units least able to absorb it. Fast-selling inventory never ages into the penalty. Slow inventory sits, ages, and gets charged more precisely because it wasn't selling — a feedback loop where the worst-performing stock becomes the most expensive to hold.
The units getting charged the most are the ones earning the least. That's not a bug in the fee structure, it's the mechanism.
Working Out Break-Even
The calculation that matters:
- Current monthly carrying cost per unit — base storage plus any aged surcharge.
- Realistic monthly sell-through at current velocity, not at the velocity you hoped for.
- Months to clear at that velocity.
- Total fees to clear — carrying cost times months, and remember the surcharge escalates as units age further.
- Net proceeds — expected revenue minus those fees, minus fulfillment fees on each sale.
If total fees to clear approach or exceed net proceeds, the inventory is costing you money to keep selling. That's the line, and plenty of aged inventory is already past it before anyone runs the numbers.
The Sunk-Cost Trap
The reasoning that keeps aged inventory in place is always some version of "I've already spent so much on this, I can't take a loss now."
The money spent on manufacturing, shipping, and fees to date is gone regardless of what you decide next. It's identical in every future scenario, which means it should carry no weight in the decision. The only live question is what happens from here: does continuing to hold produce more net cash than clearing now?
For inventory already past break-even, continuing to hold produces less — each additional month is negative. The loss isn't caused by selling; it was caused by the goods not selling. Clearing just stops it growing. Same logic as carrying cost generally.
When to Act
Reasonable triggers:
- Units have crossed into surcharge territory and velocity hasn't improved.
- Months-to-clear at current velocity exceeds six.
- Projected fees to clear exceed a third of expected net proceeds.
- You're about to send new inventory while old units of the same SKU are still aging.
That last one is the clearest signal and the most commonly ignored. If you're restocking a SKU while prior units sit aging, the old units are not going to clear on their own — they're behind newer stock in every sense.
Aged units to clear? Compare your removal options, or send us the inventory report and we'll price the lot.
Frequently asked questions
How do I know if aged inventory is costing more than it earns?
Work out monthly carrying cost per unit, months to clear at genuine current velocity, and total fees over that period. If those fees approach expected net proceeds, the inventory is costing you money to keep selling.
Should I lower the price instead of liquidating?
Worth trying if a modest discount genuinely moves units, because it clears them at retail rather than closeout pricing. If discounting hasn't moved them before, it usually won't now — and you pay storage while testing.
I've spent a lot on this inventory. Doesn't that justify holding?
No. That money is spent identically in every scenario, so it shouldn't influence the decision. The only live question is whether holding from here produces more net cash than clearing now.
What's the clearest sign it's time to clear?
Sending new units of a SKU while older units of the same SKU are still aging. The old stock is behind the new stock in every sense and isn't going to clear on its own.