Maximum bid guide
How to calculate a storage auction maximum bid
Calculate a storage auction bid ceiling from conservative resale proceeds, buyer premium, selling fees, hauling, disposal, labor, risk, and profit.
Direct answer
What is the correct storage auction maximum-bid formula?
Your maximum bid is the hammer price at which expected liquidation proceeds still cover every acquisition and resale cost, a reserve for uncertainty, and the profit required for your time and capital.
Maximum hammer bid = (expected proceeds − non-premium costs − risk reserve − target profit) ÷ (1 + buyer-premium rate)How it works
A conservative process, not a retail-price fantasy
Price visible evidence conservatively
Use plausible quick-sale proceeds, not replacement retail or the highest active listing. Exclude sealed or hidden contents.
Use the full cost stack
Read the live auction terms and include premium, tax where applicable, payment costs, vehicle, fuel, helpers, dump fees, storage, and selling fees.
Set reserve and profit separately
Risk reserve absorbs identification, condition, and sell-through errors. Target profit pays for the work and capital after modeled costs.
Worked example
Worked maximum-bid calculation
Suppose visible items support $1,800 in expected liquidation proceeds after conservative condition adjustments.
| Input | Amount | Why it matters |
|---|---|---|
| Expected proceeds | $1,800 | Likely resale revenue for visible, de-duplicated items. |
| Buyer-premium rate | 12% | Illustrative rate applied to the hammer bid; verify the current lot terms. |
| Selling fees | −$234 | Illustrative 13% blended cost. |
| Hauling, labor, and disposal | −$350 | Use your route, crew, vehicle, and local disposal rates. |
| Risk reserve | −$270 | Illustrative 15% reserve for incomplete photo evidence. |
| Target profit | −$400 | Required return after expected costs. |
Before premium, $546 remains for the bid. Dividing by 1.12 gives an illustrative maximum hammer bid of $487.50; the related premium is $58.50.
Limits and risk
What the result cannot prove
- Auction photos show only visible evidence. Sealed boxes, obscured objects, damage, odors, pests, liens, and prohibited goods may be impossible to assess.
- An identified item may be a different model, incomplete, counterfeit, damaged, or unsellable. Condition and local demand can materially change resale proceeds.
- Active marketplace listings are asking-price signals, not proof that an item sold at that price.
- UnitSift provides an informational estimate, not a certified appraisal, financial advice, or a guarantee of profit.
Frequently asked questions
Straight answers before you bid
Should I bid exactly my maximum bid?
No. It is a hard ceiling based on your assumptions, not a target. Winning below it leaves more protection against errors.
Do sealed boxes belong in expected proceeds?
No. Their contents are not visible evidence. Treat them as uncertainty rather than expected profit.
How do I check an item's resale estimate?
Review comparable evidence, distinguish sold results from active asking prices, and adjust for condition, completeness, local demand, fees, and time to sell.