Why Revenue Rank Misleads
Revenue rank answers one question: which products generated the most sales dollars. It does not show which products funded profit. A $800 drone sold twice produces $1,600 in revenue, but if cost of goods is $1,300 and advertising is $240, only $60 remains after those two costs. Ten $120 accessories produce $1,200 in revenue; with $500 of product cost and $180 of advertising, they leave $520. The lower-revenue line contributes more.
Separate three measures before changing the catalogue. Revenue is realized sales from delivered orders, excluding cancelled and returned orders; collected GST/HST is not product revenue. Gross profit is revenue minus cost of goods, so it shows product economics before advertising. Contribution is what remains after advertising as well, making it the more relevant measure when deciding whether demand is worth acquiring.
Use revenue to understand demand and cash-generating scale, gross profit to review sourcing or pricing economics, and contribution to judge products promoted through paid acquisition. ORVX calculates these measures at product and collection level, rather than relying on a revenue ranking. For a quick margin check before reviewing your catalogue, use the profit margin calculator.
| Measure | Basic calculation | Use before a catalogue decision |
|---|---|---|
| Revenue | Delivered sales dollars | Assess demand and sales scale |
| Gross profit | Revenue − cost of goods | Review product cost and pricing economics |
| Contribution | Gross profit − advertising | Assess whether paid demand leaves enough value |
Contribution per Product
Contribution is the amount left from a delivered sale after variable costs: product cost, outbound shipping, payment processing, fulfilment, packaging, refunds or other costs that rise with the order. For illustration only, a drone with $500 in realized revenue, $300 product cost, $25 shipping, $15 payment fees and $20 fulfilment contributes $140 before advertising. Contribution is more useful than revenue for comparing products with different prices or cost structures. ORVX calculates realized revenue from delivered orders only and reports contribution after advertising by product and collection.
Use contribution per unit when deciding which SKU has sound economics on each sale. Use contribution per order when bundles, accessories or shipping charges make the basket, not one item, the relevant decision: a $40 accessory may add little alone but improve the order’s total contribution. Use contribution per customer when acquisition cost and repeat purchases matter. Subtract the customer’s advertising or acquisition cost, then include later delivered orders to assess whether first-purchase economics are acceptable. A product can contribute $140 per unit but leave little per customer if it requires expensive acquisition; another can contribute less initially while repeat orders improve customer contribution.
Worked example with sample numbers
This example is illustrative. It uses sample numbers for a drones store selling in Canada. They are made up to show the method, they are not a benchmark, and your own figures will differ.
Formula: Contribution = units x net price x margin.
| Product | Units | Revenue | Margin | Contribution |
|---|---|---|---|---|
| Product C | 119 | C$25348.34 | 16.0% | C$4058.78 |
| Product B | 131 | C$13831.87 | 16.8% | C$2325.53 |
| Product A | 52 | C$4668.41 | 19.4% | C$906.02 |
| Product D | 21 | C$1933.56 | 27.8% | C$537.53 |
Run the same sum with your own numbers in the free calculator, or browse guides for sellers in Canada and more drones guides.
General information only: tax, duty and import rules change and depend on your situation, so check with an accountant or the official source before acting.
Eligible Shopify stores can see these numbers for their own store through the Founding 10,000 offer.
How to Read the Worked Example
Start with inputs: selling price, units sold, product cost, outbound shipping, fulfilment, packaging, payment fees, refunds or returns, and advertising allocation. Check pre-tax or tax-inclusive pricing and whether revenue includes delivered orders only; cancelled or returned orders should not remain in realised revenue.
Follow deductions in order: product cost to gross profit, then delivery, transaction and other variable costs, and advertising if contribution after ads is reported. Confirm whether figures are per order, unit or period; dividing a period total by units may differ from a delivered-order calculation.
Compare products on matching date range, order status, currency, tax treatment, fulfilment assumptions and advertising method. Higher dollar contribution may reflect price; stronger margin, lower costs. Treat the output as a decision aid based on the store’s inputs, not a universal Canadian benchmark. Change one assumption at a time to identify the deduction driving the result.
The Costs That Change the Comparison
List price is only the starting point. Use landed cost: supplier cost plus inbound freight and any applicable import charges, recorded in the same currency as the sale. Then subtract Canadian outbound delivery, fulfilment and packaging. A low-cost item shipped across Canada may leave less contribution than a higher-cost item with cheaper delivery. Apply payment fees to realized revenue, and subtract discounts rather than analysing the advertised price. Compare products using the same treatment for taxes collected and excluded costs.
Returns and warranty work need their own allowance. A product with a 4% return rate and a $30 average return cost carries $1.20 of expected return cost per order; warranty inspection, replacement shipping and parts can be modelled similarly. Advertising allocation also changes the view: attributed ROAS describes credited campaigns, while MER spreads total ad spend across store revenue. Use contribution before advertising to assess product economics, then contribution after advertising to decide whether acquisition is funding that product. ORVX reports both product-level profitability and return rate, helping separate a weak product from expensive delivery, promotion or support.
Deciding What to Cut
At SKU level, check contribution after advertising, inventory exposure, customer role and operational complexity, not revenue rank. Review delivered-order economics, refund value and remaining stock value with the profit margin calculator; modest contribution may justify profitable repeats or bundles, while returns, support or ageing stock can outweigh positive contribution.
- Keep: consistently positive contribution, controlled stock risk and a clear customer or collection role.
- Test unclear economics with a bundle, landing-page change or limited price experiment; measure contribution, not units. ORVX reports where a price experiment is worth running, but not elasticity or demand response.
- Bundle weak-alone items that support profitable orders, if fulfilment and returns stay simple.
- Reprice near-zero contribution where demand or strategic value exists; treat it as a test, not a forecast.
- Remove or stop replenishing when contribution is negative, cash is tied in stock, returns are high and no customer role offsets complexity; document any exception.
| Measure | Use it to decide |
|---|---|
| Contribution after advertising | Whether each delivered sale funds the business |
| Stock value and dead-stock exposure | Whether cash and storage risk justify continued availability |
| Customer and collection role | Whether the SKU supports profitable acquisition, repeat purchase or a useful bundle |
| Returns and operational complexity | Whether apparent contribution survives refunds, handling and support effort |
A Quarterly Review Routine
Each quarter, freeze the period; update each SKU’s landed, fulfilment, packaging, payment, shipping and advertising inputs; separate currencies; and date supplier, carrier or fee changes. Review delivered orders by product and collection using contribution after advertising, margin, return rate and inventory position. Compare with the previous quarter for units, realised revenue, contribution, margin, refunds, ad spend, remaining stock and dead stock. Investigate material changes through underlying orders before assigning causes; treat changes as prompts, not automatic decisions.
- Record each SKU’s decision, scale, reduce, fix economics, test or stop, with evidence, owner, date and next-review trigger. At the next review, keep, revise or reverse it using new store data.
A useful drones product profitability review does not ask which item has the highest sales or declare a universal winner. It makes the cost path visible, applies the same definitions to each product and gives the store a documented reason to keep, test, reprice, bundle or remove an item.
Sources
- GST/HST provincial rates table (Canada Revenue Agency, checked 26 October 2026).
How this page was made: drafted with AI from a brief, then checked by automated rules for arithmetic, sources and duplication. The sample numbers were calculated, not reported.