Holdline traces each product end to end — what it really is, who else sells it and at what price, what sourcing signals are visible, and where your landed margin leaks — then hands you a source-traced audit with the evidence, the confidence behind each finding, and the one move that matters.
Free: a 10-item generic Sample Pack showing the method — no SKUs of yours needed. Paid: a $49 diagnostic Starter Trace on 2–3 of your real SKUs, credited toward a Focus Audit if you continue.
With 20–100 SKUs across several suppliers and channels, no one re-checks what each product really is, who else is selling it, or what it actually costs to land. The leaks stay invisible until a quarter looks worse than it should.
The "unique" product you sell turns out to be a generic OEM unit a dozen other brands sell too.
Your product is live on a marketplace at half your price — sold by someone you may not have authorized — and you don't know it.
A clone or close substitute is winning the comparison before you ever notice it.
A supplier quietly raises unit cost or shipping and margin erodes on a SKU you haven't checked in months.
You may be paying more than the same OEM unit costs elsewhere — and there's no way to see it from your invoices.
Most sellers track none of this, or do it by hand. There aren't enough hours.
Anyone can bookmark a competitor's price. What a bookmark can't tell you: whether that competitor is even the same product, who actually makes it, which listings are the same OEM unit versus a true alternative, who's selling your SKU on which channel, and where your sourcing leaks margin. That resolution — product identity, channel and seller, sourcing — is human-verified work, and it's the part that's hard to copy.
Every finding is structured: claim → evidence → confidence → assumption. You always know what's established and what still needs proof.
The free Sample Pack uses generic public products. The $49 Starter Trace uses 2–3 of your real SKUs and is credited toward a Focus Audit if you continue.
We resolve product identity, same/substitute listings, channel-price gaps, seller-of-record signals, sourcing/OEM clues and modeled landed-margin assumptions.
If the diagnostic shows material risk, move into a Focus Audit — usually 5–8 priority SKUs — or scope a larger catalog set. No dashboard, no logins.
This is one of the 10 generic products in the free Sample Pack — public data, not your SKUs. It shows exactly what a trace looks like: what the product is, who else sells it and where, the margin picture, and one recommended move — each finding tagged with how sure we are and what still needs proof.
The free pack covers 10 generic products across common categories. A paid Starter Trace does the same depth on 2–3 of your real SKUs.
The $49 Starter Trace is not a cheap replacement for the audit. It is a diagnostic entry point: small enough to try, concrete enough to reveal whether a full audit is worth doing.
Get a generic 10-item Sample Pack to see the trace format and evidence style.
Send 2–3 real SKUs for a Starter Trace. The fee applies toward the Focus Audit.
Move into a full audit for a small priority set — usually 5–8 SKUs, depending on complexity and overlap.
After the audit, keep watching selected SKUs for channel, price, sourcing and stock changes.
Use the free pack to inspect the format. Use the Starter Trace to test Holdline on real SKUs. Move to a Focus Audit only when there is enough evidence that the deeper work is worth doing.
Starter Trace is a diagnostic, not a low-price substitute for the full audit. Focus Audit pricing depends on SKU count, product complexity, and overlap between suppliers, categories or product families. Closely related SKUs are usually cheaper to audit together than separately.
Holdline is a hands-on audit for a small number of sellers at a time. We trace the SKUs personally, verify every finding against a source, and flag exactly what public data can and can't confirm. The point isn't to make you learn another tool — it's to tell you what's really happening to the products that carry your profit, and what to do about it first.