Common Pricing Mistakes Online Sellers Make

Confusing Markup With Margin

This is the most widespread pricing mistake in ecommerce and one of the most costly. A seller who aims for a "50% margin" but actually applies a 50% markup earns a 33.3% margin, falling 16.7 percentage points short of their target. On a product with a $15 cost, a 50% markup gives a $22.50 selling price with a $7.50 profit (33.3% margin). A true 50% margin requires a 100% markup, selling the same product at $30.00 for a $15.00 profit. The difference is $7.50 per unit, which on 5,000 annual units is $37,500 in lost profit from a single misunderstanding.

The fix: Always set targets in margin terms and convert to markup for the actual calculation. Use the conversion formula: Required Markup = Target Margin / (1 - Target Margin). For a 40% margin target, you need a 66.7% markup. For 50% margin, 100% markup. For 60% margin, 150% markup. See the full markup vs margin guide for a complete conversion table and worked examples.

Using Supplier Price as Your Total Cost

Your supplier's quoted unit price is just the beginning of your true cost. A product quoted at $6.00 from a Chinese manufacturer has a true landed cost of $9.00 to $11.00 once you add ocean freight ($0.50 to $1.50/unit), customs duties ($0.30 to $1.50/unit depending on tariff classification), inland transportation ($0.20 to $0.50/unit), packaging and labeling ($0.30 to $1.00/unit), FBA inbound prep ($0.50 to $1.00/unit), and FBA storage fees ($0.20 to $0.60/unit depending on time in warehouse). Sellers who base their pricing on the $6.00 supplier price believe they have a healthy margin when they are actually operating near breakeven or at a loss after all costs are accounted for.

The fix: Calculate your true landed cost for every product by adding every expense between paying your supplier and having the product ready to sell. Include product cost, all shipping costs (supplier to you, you to FBA or customer), customs and duties, packaging, prep, storage, and platform fees. Use the landed cost as the basis for all pricing calculations. Recalculate at least quarterly as costs change. Our cost-plus pricing guide walks through the full landed cost calculation with real examples.

Forgetting to Include Amazon Fees in Margin Calculations

Amazon's referral fee (typically 15% of the selling price) and FBA fulfillment fee ($3.00 to $7.00+ depending on size and weight) together consume 25% to 40% of your selling price. A seller who calculates their margin as selling price minus product cost, without subtracting Amazon fees, dramatically overstates their profitability. A product priced at $29.99 with a $10 landed cost appears to have a $19.99 margin (67%) if you forget the fees. After the $4.50 referral fee and $5.20 FBA fee, the actual margin is $10.29 (34%). Many sellers discover they have been losing money on Amazon for months because they calculated margins without accounting for all platform fees.

The fix: Use Amazon's Revenue Calculator (available in Seller Central) to model the profitability of every product before listing it. Input your selling price and product cost, and the calculator shows your net profit after all Amazon fees including referral, fulfillment, storage, and any applicable fees for category-specific programs. If the Revenue Calculator shows an unacceptable margin, either raise your price, reduce your product cost, or do not sell that product on Amazon. Never list a product on Amazon without running it through the Revenue Calculator first.

Setting Prices Once and Never Revisiting

Your costs change over time. Suppliers raise prices. Shipping carriers increase rates every January. Amazon adjusts FBA fees annually. Tariffs change. Exchange rates fluctuate. A price that was profitable 12 months ago may be at breakeven or below today if costs have crept up 10% to 15% without a corresponding price adjustment. Meanwhile, the competitive landscape shifts: competitors enter and exit, market averages move up or down, and customer expectations evolve. A static price in a dynamic market is a price that drifts out of alignment in both directions.

The fix: Schedule a pricing review at minimum twice per year: January (after annual fee increases from carriers and platforms) and before your peak selling season. Review each product's current margin using updated costs, compare your prices to current competitor pricing, and adjust any products where margins have compressed below your minimum threshold or where the competitive landscape has shifted enough to create repricing opportunities. Use a spreadsheet or your pricing software to track margin changes over time and flag products that need attention.

Racing to the Bottom on Price

When a competitor lowers their price, the instinct is to match or beat them. When that competitor lowers their price again, you follow again. This race to the bottom destroys margins for everyone involved and often ends with one or both sellers pricing below their costs, at which point one gives up and exits the market, leaving the other with customers who were trained to expect the lowest possible price and will leave the moment a new cheap competitor appears.

The fix: Set a hard minimum price for every product based on your cost floor plus minimum acceptable margin, and never go below it regardless of what competitors do. If a competitor prices below your minimum viable price, let them have those sales. They are either operating unsustainably, using the product as a loss leader with another revenue path, or have a cost advantage you cannot match. Instead of competing on price, compete on value: better listing quality, more reviews, faster shipping, product bundles, and brand differentiation that justify your higher price. The competitive pricing guide covers strategies for staying profitable in price-sensitive markets.

Underpricing Unique Products

Sellers of unique, handmade, private label, or proprietary products frequently underprice their products by anchoring to commodity competitors. A seller of handmade ceramic mugs might price at $18 because they see mass-produced mugs at $12 to $15 on Amazon and feel they should be "in the same range." But their product is not in the same range. It is handmade, unique, and cannot be purchased anywhere else. The relevant comparison is not mass-produced mugs at $15 but other handmade ceramic pieces at $35 to $65 on Etsy and specialty retailers. Pricing too low leaves enormous margin on the table and undermines the brand positioning that makes the product special.

The fix: Identify your true competitive set, which may not be the cheapest products in your category. If your product is differentiated, compare it to other differentiated products at similar quality levels, not to mass-market commodities. Test higher price points to discover what customers will actually pay. Many sellers who raise prices on unique products find that conversion rates barely change because their customers were already buying based on the product's unique qualities, not its price. A 20% price increase with a 5% volume decline produces significantly more profit. The value-based pricing guide explains how to price based on customer value rather than production cost.

Discounting Too Frequently

Frequent discounting trains customers to wait for the next sale rather than buying at full price. If customers know you run a 20% off promotion every month, rational behavior is to never buy at full price and simply wait for the next sale. Over time, your effective selling price becomes the discounted price, and the "regular" price loses all meaning. Brands like Gap, J. Crew, and Kohl's have struggled for years to wean customers off the expectation of constant promotions, and some have never recovered.

The fix: Keep promotions infrequent (no more than 4 to 6 per year) and unpredictable so customers cannot plan around them. Use targeted discounts (first purchase only, loyalty members only, email subscribers only) rather than blanket public promotions. Focus on value-adding promotions (free gift with purchase, buy two get free shipping, bundle deals) that increase perceived value rather than simply reducing the price. Track what percentage of your revenue comes from discounted sales versus full-price sales. If more than 30% of revenue is discounted, you have a discounting addiction that needs to be addressed. See the full discount strategy guide for breakeven math and structural guardrails.

Ignoring the Psychology of Pricing

Two products at the same margin can perform dramatically differently based on how the price is presented. A product at $29.99 outsells the same product at $30.00 because of left-digit anchoring. A product shown as "Was $49.99, Now $34.99" outsells the same product simply listed at $34.99 because of price anchoring. Offering three tiers (Good, Better, Best) drives most customers to the middle tier, which you have designed to be your most profitable option. These psychological pricing techniques are free to implement and can increase conversion rates by 8% to 25% depending on the product category.

The fix: Audit your current prices for simple psychological pricing opportunities. Are your prices ending in .99 or .95 for value-positioned products? Are you showing reference prices (MSRP, "compare at" prices) to anchor the customer's perception? Could you offer a three-tier product structure that steers customers toward your most profitable option? Could you frame your price in per-day or per-use terms to make it feel more affordable? Implement the easiest opportunities first, measure the conversion impact, and add more sophisticated techniques over time.

Not Factoring Returns Into Pricing

Every product has a return rate, and every return has a cost. On Amazon, return rates vary by category: 5% to 8% for most consumer products, 15% to 25% for apparel, and 3% to 5% for consumables. Each return costs you the original shipping and fulfillment fees (not refunded), the cost of return shipping (if you offer free returns), the loss in product value (returned products are often unsellable at full price), and Amazon's return processing fee. For a $30 product with a 10% return rate where each return costs $12 in total fees and lost value, the per-unit cost of returns across all sales is $1.20 ($12 x 10%). Sellers who do not factor this into their pricing overstate their margins by $1.20 per unit.

The fix: Calculate your actual return rate and average cost per return for each product or product category. Multiply the return rate by the cost per return to get the per-unit return cost, and include this in your total cost when calculating margins and setting prices. For high-return-rate products (apparel, footwear, electronics), the return cost adjustment can be significant enough to change your pricing decisions entirely. A product that appears to have a 35% margin before return costs might have only a 22% margin once returns are factored in, which may be below your minimum viable threshold.

Pricing Based on Feelings Rather Than Data

Many sellers set prices based on intuition: "This feels like a $25 product" or "I would pay about $30 for this." The problem is that your own perception of value is skewed by your knowledge of the product's cost, your emotional attachment to the product, and your personal price sensitivity, none of which reflect what your target customer would pay. A seller who spent months developing a product tends to undervalue it because they are anchored to the production cost. A seller who is personally frugal tends to underprice because they project their own price sensitivity onto customers who may be far less price-sensitive.

The fix: Replace feelings with data. Use competitor price analysis to understand the market range. Use cost analysis to establish your pricing floor. Use A/B testing to discover what customers actually pay at different price points. Use profit-per-visitor calculations to find the price that maximizes total profit rather than the price that "feels right." Data-driven pricing consistently outperforms intuition-based pricing because it reflects actual customer behavior rather than the seller's assumptions about customer behavior.

Not Having a Pricing Strategy at All

The most fundamental mistake is having no deliberate pricing strategy. Many sellers price their products by looking at a few competitors, picking a number in the middle, and never thinking about it again. This approach accidentally positions the product in the market without a strategic intent, misses opportunities to capture additional margin on differentiated products, fails to adjust as costs and competitive conditions change, and treats pricing as a one-time administrative task rather than an ongoing strategic function that directly controls profitability.

The fix: Choose a pricing model that fits your business and product type. Set minimum margin thresholds. Establish a regular pricing review cadence. Build competitive monitoring into your routine. Test prices on your highest-volume products. Read the complete pricing strategy guide and implement one improvement at a time, starting with the mistake that is costing you the most money based on your current situation.