What goes into product cost
Product cost is the total amount it costs to make or acquire one unit of a product. For manufacturers, it includes raw materials, labor, and overhead. For retailers, it includes the purchase price plus any costs to get the product to your shelf.
Getting this number right is the foundation of profitable pricing. If you underestimate your costs by even 10%, you might think you are making money on every sale while actually losing it.
The product cost formula
For manufacturers: Product Cost = Direct Materials + Direct Labor + Manufacturing Overhead
Direct materials — The raw materials that become part of the finished product. For a t-shirt maker: fabric, thread, labels, and tags.
Direct labor — Wages for workers who directly produce the product. If a seamstress spends 20 minutes making a shirt at $20/hour, direct labor is $6.67 per shirt.
Manufacturing overhead — Indirect costs shared across products. Factory rent, equipment depreciation, utilities, and indirect labor (supervisors, maintenance). Allocate these across units produced. If monthly overhead is $3,000 and you produce 1,000 shirts, overhead per shirt is $3.00.
Total product cost per shirt: $4.50 (materials) + $6.67 (labor) + $3.00 (overhead) = $14.17.
For retailers: Product Cost = Purchase Price + Freight + Duties + Handling
This is often called "landed cost" — the total cost of getting one unit from your supplier to your shelf. A $10 wholesale product with $1.50 in shipping, $0.50 in import duties, and $0.30 in receiving labor has a landed cost of $12.30.
Markup vs margin: know the difference
Stockria in action — Low-stock alerts tell you what's running out and when to reorder.
These terms are often confused, and mixing them up leads to pricing mistakes.
Markup is the percentage added to cost to get the selling price. Markup = (Selling Price - Cost) / Cost x 100
Margin is the percentage of the selling price that is profit. Margin = (Selling Price - Cost) / Selling Price x 100
Same product, same numbers, different results:
- Product cost: $14.17
- Selling price: $28.00
- Markup: ($28 - $14.17) / $14.17 = 97.6%
- Margin: ($28 - $14.17) / $28 = 49.4%
A 100% markup equals a 50% margin. A 50% markup equals a 33% margin. When someone says "we need 50% on this product," clarify whether they mean markup or margin. The selling price is very different.
Costs people forget to include
Packaging. Boxes, tissue paper, stickers, mailers, tape. These add $0.50-$3.00 per unit depending on your presentation standards.
Payment processing fees. Credit card processors take 2.5-3.5% of every sale. On a $28 sale, that is about $0.85 per unit.
Returns and defects. If 5% of products are returned or defective, spread that cost across the remaining 95%. A $14.17 product cost becomes $14.92 when accounting for a 5% return rate.
Shipping to customers. If you offer free shipping, the shipping cost is part of your product cost, not a separate line item. That $5.00 flat rate shipping eats directly into your margin.
Setting your price
Once you know your true product cost including all the hidden costs, set a price that covers costs, contributes to operating expenses, and leaves a profit.
A common starting point for physical products is a 50% gross margin (which is a 100% markup). From that gross profit, you still need to pay rent, salaries, marketing, and other operating expenses. If your operating expenses are 35% of revenue, a 50% gross margin leaves you with a 15% net margin.
If the market will not support the price your cost structure requires, the answer is not to lower the price and hope for volume. The answer is to find ways to reduce costs or find a different product.
Track your product costs in your inventory system. When material prices change or you switch suppliers, update the costs so your margin calculations stay accurate. Small cost increases compound across hundreds or thousands of units sold.