Revenue Up 20%: Did Customers Buy More, or Pay More?

Revenue rose 20%. Did customers buy more, pay more, or both? A growth headline alone cannot answer that question.

By the SignalSage / MerlaTech team.

Fictional single-product revenue worksheet. Base: 100 units at $10=$1,000. A:120 at $10=$1,200, units +20%. B:100 at $12=$1,200, units flat. C:80 at $15=$1,200, units −20% and price +50%. All revenue +20%, different drivers. Check price, volume, product mix, currency and acquisitions. Same-period comparisons; box icons illustrative, not to scale. Revenue is not profit. SignalSage by MerlaTech, iPhone and Android; some features paid.
Fictional single-product examples, matching periods. Boxes are illustrative, not to scale. Revenue is not profit.

Watch the 83-second price-and-volume test

Compare three animated cases, then pause for the price +10% / unit sales −10% challenge. Each unit block in the video represents ten units.

Watch on YouTube

Three ways to reach the same revenue

Start with 100 units at $10 each: $1,000. Compare three possible next periods:

  • More units: 120 × $10 = $1,200. Units rise 20%; price is unchanged.
  • Higher price: 100 × $12 = $1,200. Units are unchanged; price rises 20%.
  • Fewer units: 80 × $15 = $1,200. Units fall 20%; price rises 50%.

Revenue grows 20% in every case. These are alternative scenarios, not a sequence, and none is automatically a better investment. Costs, customer retention and the reasons for changing prices still matter.

Multiply changes; do not just add percentages

In this simplified single-product case, the revenue growth factor equals the price factor multiplied by the unit-volume factor. For scenario C: 1.50 × 0.80 = 1.20.

Mini challenge: price rises 10% while units fall 10%. Is revenue unchanged? No: 1.10 × 0.90 = 0.99, so revenue falls 1%. The interaction matters.

A five-check worksheet for a real filing

  1. Price: distinguish list-price announcements from realized selling prices after discounts.
  2. Volume: find the disclosed unit metric and check whether its definition changed.
  3. Product mix: a shift toward higher-priced products can change average revenue per unit without a like-for-like price increase.
  4. Currency: separate reported growth from any clearly defined constant-currency measure.
  5. Acquisitions: identify acquired or sold businesses; read the company’s definition of organic growth rather than assuming it means unit growth.

Use the same reporting period, units and segment boundaries. A company with subscriptions or multiple products will need a more detailed model. These arithmetic examples do not establish customer demand, profitability, cash flow, fair value or future returns.

Copy into your research notes

Company / ticker:
Filing URL and period:
Reported revenue change:
Disclosed price and volume changes:
Mix / currency / acquisition effects:
What is supported by the filing:
What remains unknown:

Continue your stock research

Save this worksheet and follow SignalSage by MerlaTech for practical US-stock research examples. The worksheet is free to read. Our app has an English interface, with some features requiring in-app purchases or subscriptions.

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Fictional educational cases, not investment advice. This worksheet does not claim the app automatically reconciles revenue drivers or verifies filings.

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