Everyone talks about Amazon as if it's easy money, and that's precisely the problem: most people who ask how to sell on Amazon FBA never do the math and discover too late that the fees have eaten away at their profit margin. FBA works—very well, in fact—but only if you go in with a clear understanding of the numbers. In this guide, I'll show you how much it really costs to sell with FBA in 2026, how to choose a profitable first product, and what calculations you should make before buying a single unit.
What is FBA and how does it differ from FBM
FBA stands for Fulfillment by Amazon. You buy the product and send it to Amazon's warehouses; they store, pack, ship, and handle returns and customer service. Your product qualifies for Prime, which is where most buyers are.
The alternative is FBM (Fulfillment by Merchant): you store the inventory at your home or warehouse and ship each order yourself. You pay lower fees, but you shoulder the workload and rarely compete with Prime in speed.
The rule of thumb: FBA is best for small, lightweight, and fast-moving products; FBM is best for large, heavy, fragile, or slow-selling products. If you're still not entirely clear on the platform, start with our step-by-step guide on how to sell on Amazon USA . And if you don't want to buy inventory, check out how to sell on Amazon without inventory.
How to sell on Amazon FBA: the real costs in 2026
This is where the fantasy falls apart. Selling through FBA involves four costs that add up, and you have to factor them all in:
- Professional Plan: $39.99 per month. It's a fixed price and you pay whether you sell anything or not. It only makes sense if you're going to move more than about 40 units per month; below that, the Individual plan charges per unit sold.
- Referral fee: usually between 8% and 15% of the selling price. This is Amazon's commission on the sale. Most categories are at 15%; electronics and cell phones drop to 8%, and clothing can reach 17%. It's calculated on the total price, not your profit.
- Fulfillment fee: charged per unit shipped And it depends on the size and weight. For 2026, Amazon adjusted these fees starting January 15, with an average increase of about $0.08 per unit—small on average, but the actual impact depends on your size category.
- Storage fee: you pay for the space you occupy each monthThe cost ranges approximately from $0.87 to $2.40 per cubic foot depending on the season, and it rises sharply in the last months of the year. Inventory that doesn't turn over incurs monthly rent charges.
In total, fees typically account for between 30% and 45% of the sale price . That's the number almost no one tells you at the beginning. Fees change every year: always confirm yours on Amazon's official pricing page before calculating.
How to choose your first product
The product determines 80% of the result. These are the filters I use, in order:
- Price between $20 and $50. Below $20, the fees eat up everything. Above $50, the buyer thinks twice about the purchase, and your initial investment increases.
- Small and lightweight. If it fits in a shoebox and weighs less than two pounds, your fulfillment fee will be among the lowest.
- Stable demand, not trendy. A product that sells steadily throughout the year is a better business than one that booms in December and dies in January.
- Attackable competition. If the first results have thousands of reviews each, don't go there with your first product.
- No electric, fragile, battery-powered, or supplemental items. Returns, restrictions, and headaches you don't need when starting out.
A piece of advice worth its weight in gold: don't look for the perfect product. Look for an acceptable one, learn the entire process with it, and apply what you've learned to the second. The first product is your school, not your retirement.
The profitability calculator: the number that decides everything
Before buying anything, do this calculation with real numbers. Example with a $30 product :
- Sale Price: $30.00
- Referral fee (15%): −$4.50
- Estimated fulfillment fee (standard small): −$4.00 approximately
- Cost of the product delivered to the warehouse (product + freight + customs): −$8.00
- Storage and returns (conservative estimate): −$1.00
- Profit before advertising: $12.50
And now for the step everyone skips: subtract advertising costs. Initially, Amazon Ads easily takes between $3 and $5 per sale. Your actual profit is around $8. If that number is negative or close to zero from the start, that product isn't profitable, no matter how attractive it is. Use the official Seller Central calculator with your actual dimensions, not with estimates from memory.
Mistakes that ruin the first attempt
Four mistakes are always repeated. Buying too much inventory at the beginning : start with 100 to 300 units, not 1,000, because if the product doesn't sell, you'll pay for storage while it deteriorates. Ignoring advertising costs when calculating profit margins. Competing on price instead of differentiating yourself with better photos and a better listing. And not having your legal affairs in order : Amazon will ask for your tax information, and you need your EIN and business bank account details before you can invoice. If you don't have a Social Security number, you can still sell on Amazon: we explain how in our article on selling on Amazon without a Social Security number.
Conclusion
Selling through FBA isn't easy money, nor is it a scam: it's a margin-based business, and like any margin-based business, the winner is the one who does the math right before investing. If you choose a small product with stable demand and reasonable competition, and calculate all the fees—including advertising—before buying, you're in with your eyes open. Start small, learn the entire cycle with your first product, and scale with what you've learned. That's the difference between those who are still selling the following year and those who quit in the third month.
If you want your listings, photos, and campaigns handled by people who make a living from this, at All Connect Digital we help Hispanic businesses set up and grow their online stores with strategy and data, not hunches.
