What to Charge for a Diagnosis When Two Others Already Charged for Theirs

Why this matters

A customer who has already paid two diagnostic or service charges and still has the same problem is understandably tense about paying a third. If you charge your normal rate without explaining why this visit is different, it feels to them like paying for a third guess. If you undercharge or discount just to smooth over that tension, you are pricing a genuinely harder job, one that requires you to actively work around two prior failed conclusions, below what it actually costs you to do properly. Getting this conversation right protects both the relationship and the economics of taking on a job that is objectively more work than a first-time call.

Why this diagnosis costs more, not less, to do properly

A repeat-failure diagnosis is not a faster version of a normal diagnosis just because some things have already been eliminated. In practice it often takes longer, because you need to re-verify claims you cannot simply trust, gather a history the customer may only remember imperfectly, and work past the obvious causes that were presumably already tried. Pricing this like a routine service call undercharges for the actual time and judgment involved.

Set expectations before you start, not after

Explain, in plain terms, before you begin work: this visit is a full diagnostic effort, not a follow-up to the prior companies' work, and the charge reflects that. If your normal pricing has a diagnostic fee that is credited toward the repair, say so explicitly, since that structure directly addresses the "paying for another guess" fear: the customer is not paying twice for the same outcome, they are paying once for a diagnosis that, if you proceed with the fix, folds into the total.

Structuring the charge fairly

• A standard diagnostic fee, clearly scoped, is usually the right default. Do not discount it purely because two other companies already charged their own; your diagnostic time is real regardless of what came before, and discounting sends the signal that this is a lesser service than it actually is.
• If the job turns out to be genuinely complex (an intermittent fault, multiple candidate causes, a modification history that needs untangling) and that complexity was foreseeable from the intake conversation, communicate a time-based or tiered structure upfront rather than surprising the customer with a large bill after a long visit.
• Avoid the instinct to work for free "to make it right" for a frustrated customer, unless your company has a specific, deliberate policy for that situation. Sympathy pricing on a case-by-case basis at the tech's discretion creates inconsistent expectations across your whole customer base and is hard to sustain.

What NOT to do

Do not imply, to win the job, that the first two companies overcharged or wasted the customer's money; you were not there and do not actually know what they found or ruled out, and characterizing their pricing invites the same professionalism and accuracy risk as characterizing their competence. Do not price your diagnosis as a discount specifically because you assume this one will be easy since so much has already been eliminated; a repeat-failure job is frequently harder, not easier, and pricing it as easy before you have actually done the work is a bet you may lose.

The conversation, in short

Tell the customer plainly: this is a real diagnostic visit, priced accordingly, and if it leads to a repair, the diagnostic charge applies toward that repair per your normal policy. That framing answers the "am I just paying for a third guess" fear directly, without discounting the actual value of doing the diagnosis properly.

References

• Trade-standard practice for diagnostic fee structures and fee-to-repair crediting
• Consumer-protection guidance on service pricing transparency
• See related: Being the Third Company Called After Two Others Failed; The Customer Is Skeptical Because Two Others Already Failed Decision Tree