Cost Plus Pricing for Online Products

The Cost-Plus Formula

The basic formula is straightforward: Selling Price = Total Cost Per Unit x (1 + Markup Percentage). If your total cost is $14.00 and your desired markup is 120%, your selling price is $14.00 x 2.20 = $30.80. You might round this to $29.99 or $30.99 depending on your psychological pricing approach. The formula itself is simple, but getting the "total cost per unit" number right is where most sellers make expensive mistakes.

The biggest error in cost-plus pricing is using the supplier's quoted unit price as your total cost. The quoted price is just the beginning. Your true cost includes every expense incurred between paying your supplier and having the product ready to ship to a customer. For a product sourced from a Chinese manufacturer at $5.00 per unit, the actual cost breakdown might look like this: $5.00 product cost, $0.80 ocean freight per unit, $0.40 customs duties (8% tariff rate), $0.25 customs broker fee per unit, $0.15 inland trucking to your warehouse, $0.60 Amazon FBA inbound shipping, $3.50 FBA fulfillment fee, $1.20 FBA monthly storage (assuming 60 days average), and $0.50 for poly bag, label, and prep. That brings your true landed cost to $12.40, not $5.00. A 100% markup on $5.00 gives you a $10.00 selling price that actually loses $2.40 per unit. A 100% markup on the true $12.40 cost gives you a $24.80 selling price with real profit.

Calculating Your True Landed Cost

Landed cost is the total expense of getting one unit of product from your supplier to your customer's door, or to the point where it is ready for sale. Break it into categories to make sure nothing gets missed.

Product and Manufacturing Costs

Start with the unit price from your supplier. If you pay different prices at different order quantities, use the price for your typical order size, not the lowest MOQ price. Include any customization costs like custom packaging, labeling, printing, or branding that your supplier charges. If you order samples before each production run for quality verification, amortize that cost across the production quantity. A $200 sample cost on a 1,000-unit order adds $0.20 per unit.

Shipping and Logistics

For overseas sourcing, calculate the per-unit cost of ocean freight or air freight by dividing the total shipping cost by the number of units in the shipment. Ocean freight for a 20-foot container from China to the US West Coast typically runs $2,000 to $4,000 in 2026, and a container holds a variable number of units depending on product size. A container with 5,000 units at $3,000 total freight costs $0.60 per unit. The same container with 500 large items costs $6.00 per unit. Do not forget inland transportation from the port to your warehouse or Amazon fulfillment center, which adds $500 to $2,000 depending on distance.

For domestic sourcing, the math is simpler but still important. Ground shipping from a domestic supplier might cost $0.50 to $3.00 per unit depending on weight and distance. Free shipping from your supplier does not mean no cost; it means the shipping cost is built into the unit price. If a domestic supplier offers the same product at $8.00 with free shipping and a Chinese supplier offers it at $5.00 plus $2.00 in total shipping and duties, the domestic option is actually more expensive, but the shorter lead time and simpler logistics might justify the premium.

Duties, Taxes, and Fees

Products imported into the US are subject to customs duties based on the product's HTS (Harmonized Tariff Schedule) classification. Duty rates vary from 0% to 25% or more depending on the product category and country of origin. You can look up your product's duty rate on the US International Trade Commission's HTS database. In addition to the duty itself, you will pay a customs broker fee of $100 to $250 per shipment for the broker to handle the paperwork, plus a Merchandise Processing Fee of 0.3464% of the shipment value (minimum $31.67). Divide all of these fees by the number of units in the shipment to get the per-unit cost. See our customs and duties guide for a full breakdown.

Fulfillment and Platform Costs

If you use Amazon FBA, your per-unit costs include the FBA fulfillment fee ($3.00 to $7.00+ depending on size and weight), monthly storage fees ($0.56 to $2.40 per cubic foot depending on season), and the Amazon referral fee (typically 15% of the selling price). The referral fee is particularly important for cost-plus calculations because it is a percentage of revenue, not a fixed cost. This means your cost-plus formula needs to account for it: Selling Price = (Total Fixed Costs Per Unit) / (1 - Referral Fee % - Desired Margin %). If your fixed costs are $10 per unit, the referral fee is 15%, and you want a 25% margin, the formula gives you $10 / (1 - 0.15 - 0.25) = $16.67.

For self-fulfilled orders through Shopify or WooCommerce, your fulfillment costs include picking and packing labor (typically $1.50 to $3.00 per order), packaging materials ($0.50 to $2.00), and outbound shipping to the customer. If you use a 3PL fulfillment service, they charge per pick ($0.20 to $0.50 per item), per pack ($1.00 to $3.00 per order), and storage per pallet or cubic foot per month.

Typical Markups by Product Category

Markup percentages vary significantly across product categories, and understanding the norms for your category prevents pricing yourself too high or too low relative to the market. Fashion and apparel typically use 100% to 300% markups (a t-shirt costing $8 sells for $16 to $32). Consumer electronics use 10% to 50% markups because competition is intense and customers comparison-shop aggressively. Specialty food and beverages use 50% to 100%. Health and beauty products use 100% to 200%. Home goods and furniture use 80% to 150%. Handmade and artisan products use 200% to 400%, reflecting the labor intensity and uniqueness.

These ranges reflect what the market will bear in each category, not just what sellers wish they could charge. A consumer electronics seller trying to apply a 200% markup would price themselves out of every sale. A handmade jewelry seller using only a 50% markup would undervalue their work and struggle to cover the labor hours invested. Look at what successful sellers in your specific subcategory charge, calculate backwards to estimate their markups, and use that as a reality check against your own cost-plus calculations.

When Cost-Plus Works Best

Cost-plus pricing is most effective in three situations. First, when you sell commodity products with many competitors offering functionally identical items. In this environment, the market sets the price, and cost-plus tells you whether you can compete profitably at that price. If your cost-plus calculation produces a price higher than the market rate, you need to reduce costs or find a way to differentiate. Second, when you have a very large catalog (hundreds or thousands of SKUs) and individually optimizing every product's price is not practical. Cost-plus with a standard markup across the catalog ensures adequate margins while keeping pricing management simple. Third, when you do custom or made-to-order work where each project has different costs and a standardized markup simplifies quoting.

Cost-plus is least effective for unique, branded, or differentiated products where you have pricing power. If you have designed a product that customers cannot buy anywhere else, cost-plus will almost certainly underprice it. The customer does not care what your product costs to make; they care what it is worth to them. For these products, value-based pricing captures far more of the available margin. Use cost-plus as your floor, the minimum price you will accept, and use value-based or competitive pricing to determine your actual selling price above that floor.

Common Cost-Plus Mistakes

The most common mistake is forgetting to include all cost components. Leaving out FBA fees, referral fees, returns costs, or customer acquisition costs means your "profitable" markup is actually losing money. Calculate your return rate and include the cost of returns in your per-unit cost. If 5% of units are returned and each return costs you $8 in fees and lost value, that adds $0.40 to the per-unit cost of every product sold.

Another mistake is applying the same markup percentage regardless of price point. A 100% markup on a $5 product gives you a $5 margin, which might not cover your per-order fixed costs of $3 to $5 for picking, packing, and shipping. A 100% markup on a $100 product gives you a $100 margin, which is more than adequate. Lower-cost products generally need higher percentage markups to generate enough absolute dollars of profit per sale to cover the fixed costs of processing each order.

Finally, many sellers forget to recalculate their cost-plus prices when costs change. Supplier price increases, shipping rate changes, new tariffs, FBA fee adjustments (Amazon raises fees annually), and changes in your return rate all affect your true cost. A price that was profitable six months ago might be at breakeven or losing money today if costs have crept up 10% to 15% without a corresponding price increase. Review your cost calculations at least quarterly and adjust prices accordingly.