What cost per scan tells you
Cost per scan spreads the full cost of a QR placement across the scans it produces. It turns a vague sense that print is expensive into a number you can compare across placements and campaigns.Cost per scan is a cost-efficiency number, not a profit number. Pair it with conversion value before judging a placement.
How to compute cost per scan
Cost per scan = total campaign cost divided by total scans.Illustrative example numbers, not real-world data: a total cost of 1,200 currency units divided by 400 scans gives 3.00 per scan. If the same placement produces 800 scans next month at the same cost, cost per scan falls to 1.50.
How to collect the data
Add up design, printing, placement fees, and tracking costs for the same period you count scans in. Leave nothing out, or cheap-looking placements will quietly hide their real cost.Keep the raw counts, not just the final percentage. Raw counts let you recompute the metric if you later fix the definition, and they make it possible to spot a denominator problem, such as a week where exposures were estimated instead of counted. Store the counts in one place with the date range, the placements included, and the name of the person who pulled them. That small discipline turns a spreadsheet into an audit trail.
Reading the result
Never judge cost per scan as a single number. Break it down by placement type, print run, and campaign month. A campaign that looks average overall may be strong in one segment and weak in another, and the fix is completely different in each case. Compare the same placement against its own past, and compare different placements only when their audiences and contexts are genuinely similar. A short trend over four or more comparable periods is worth far more than a single snapshot, because it separates a real shift from weekly noise.Also check the relationship between cost per scan and the metrics around it. If scans rise while conversions fall, the new scanners may be less interested visitors, or the landing page may have changed. If cost rises while cost per scan stays flat, you are paying more for the same outcome. Metrics make sense in groups, not in isolation, and the habit of reading two or three together prevents most misreadings.