How do I justify the cost of a comp to finance?

Don’t defend it on its own price. Compare it to the cost of the decision it protects, the tooling, print run, or launch downstream. A comp is a small fixed cost, and the thing it de-risks is a large variable one, which is the definition of low-cost insurance.

Why is catching a problem on a comp so much less expensive?

Because the cost of a packaging mistake climbs at every stage it survives. On a comp it costs a file revision. After tooling it costs a remake. At print it costs a run. At launch it costs the launch. The comp is the one point where being wrong is nearly free.

What numbers support the case?

About 62% of package redesigns fail to lift sales (Designalytics), and roughly 40% of new consumer packaged goods are off the shelf within two years (Victory et al., 2021). Against redesign programs that run into six figures and launches that can be written off in the hundreds of millions, a comp’s cost is a rounding error.

How should the business case be framed?

As risk reduction. Name the specific downstream cost the comp protects, quantify the rework it prevents, tie it to the failure rate, and lead with the ratio of the comp’s cost to the investment it de-risks, not the standalone line item.