Reselling on Amazon can be profitable, but your margins are thinner than most beginners expect. After Amazon takes its referral fees (typically 15% of the sale price), fulfillment costs, storage fees, and the cost of goods, many resellers net between 10% and 30% on each sale. Whether that translates into meaningful income depends on your sourcing strategy, product category, and how well you manage inventory.
What Amazon Takes From Every Sale
Before you earn a dollar, Amazon collects several fees. The biggest is the referral fee, which is a percentage of the total sale price (item price plus shipping and gift wrap, excluding sales tax). Most categories charge 15%, but the range runs from 5% to 45% depending on what you sell. A $0.30 minimum referral fee applies per unit when the percentage works out to less than that.
Some categories use tiered rates that shift at certain price points. Clothing, for example, charges 5% on items up to $15, 10% from $15 to $20, and 17% above $20. Jewelry takes 20% up to $250, then drops to 5%. Electronics accessories charge 15% up to $100, then 8%. If you sell media (books, DVDs, music, software, video games), you also pay a $1.80 variable closing fee on top of the 15% referral fee.
Beyond referral fees, you pay for fulfillment. If you use Fulfillment by Amazon (FBA), Amazon picks, packs, and ships your products for a per-unit fee based on the item’s size and weight. If you fulfill orders yourself (Merchant Fulfilled), you handle shipping costs directly but lose the Prime badge that drives higher conversion rates. Either way, fulfillment is a significant line item.
You also need an Amazon selling plan. The Professional plan costs $39.99 per month and makes sense once you sell more than about 40 items monthly. The Individual plan charges $0.99 per item sold instead.
Storage Fees Add Up Quickly
FBA sellers pay monthly storage fees based on how much space their inventory occupies in Amazon’s warehouses. Standard rates are $0.78 per cubic foot from January through September, jumping to $2.40 per cubic foot during the October through December holiday season. That Q4 spike catches new sellers off guard, especially if they overstock heading into the holidays.
Inventory that sits too long gets even more expensive. Amazon applies an aged inventory surcharge starting at 271 days. Items sitting 12 to 15 months cost an additional $0.30 per unit or $6.90 per cubic foot, whichever is greater. Past 15 months, it rises to $0.35 per unit or $7.90 per cubic foot. Slow-moving products can quietly eat your profits. Successful resellers track their inventory age closely and discount or remove items before surcharges kick in.
How Different Reselling Models Compare
Not all Amazon reselling works the same way. The three main approaches, retail arbitrage, online arbitrage, and wholesale, each have different capital requirements and profit profiles.
Retail arbitrage means buying discounted products from physical stores (clearance racks, seasonal sales, liquidation events) and reselling them on Amazon at a markup. Startup costs are low since you buy small quantities and don’t need supplier relationships. Experienced arbitrage sellers often target a minimum 50% return on investment per item, meaning a product bought for $10 should sell for enough to net at least $15 after all fees. The downside is that sourcing is time-intensive and inconsistent. You’re hunting for deals one shopping trip at a time, and the same product may not be available next week.
Online arbitrage follows the same logic but sources deals from other websites instead of physical stores. It scales slightly better since you can scan deals from home, but competition is fierce because anyone with a browser can find the same listings.
Wholesale involves buying products in bulk directly from manufacturers or authorized distributors at below-retail prices, then reselling on Amazon. Profit margins per unit tend to be higher because your cost per item is lower, but the upfront investment is substantial. Most suppliers require minimum orders that can run into the hundreds or thousands of dollars. You also need to manage larger inventory quantities, which means higher storage fees if products don’t move quickly.
A Realistic Look at the Numbers
Here’s what a typical reselling transaction looks like. Say you buy a kitchen gadget at a retail store for $12 and list it on Amazon for $30. Amazon’s 15% referral fee takes $4.50. FBA fulfillment might cost $3.50 to $5.00 depending on size and weight. Monthly storage adds a small amount per unit. After all Amazon fees and your $12 cost of goods, you’re left with roughly $8 to $10 in profit on that single item.
That’s a healthy margin on paper. The challenge is doing it at volume. To earn $3,000 a month in profit, you’d need to sell 300 to 375 items like that one, which means sourcing, listing, and shipping that many products consistently. Many part-time resellers earn $500 to $2,000 per month, while full-time sellers who treat it as a business and reinvest in inventory can push well past that.
Your real hourly rate matters too. If you spend 20 hours a week sourcing, listing, and managing inventory to net $1,500 a month, that’s roughly $18 per hour before taxes. Some sellers find that perfectly acceptable as a side income. Others realize the time investment doesn’t justify the return compared to other opportunities.
Costs Most New Sellers Overlook
Beyond Amazon’s fees and inventory costs, several expenses cut into your bottom line. Returns are a constant reality in e-commerce. When a customer returns an item, you may get the product back in unsellable condition while Amazon refunds the buyer. You absorb that loss. Return rates vary by category, but clothing and electronics tend to run higher.
Shipping to Amazon’s warehouses is another cost. If you use FBA, you need to send your inventory to Amazon’s fulfillment centers, and those inbound shipping costs come out of your pocket. Buying shipping supplies, labels, and poly bags adds up over time.
Once your monthly sales exceed $10,000, Amazon requires you to carry commercial liability insurance. A business owner’s policy typically runs around $140 per month on average, though your actual cost depends on your product types and sales volume. Even below that threshold, carrying insurance is worth considering since you’re legally liable for products you sell.
Taxes deserve attention too. Reselling income is taxable, and if you’re self-employed, you owe both income tax and self-employment tax (which covers Social Security and Medicare) on your net profit. Setting aside 25% to 30% of your profits for taxes is a reasonable starting point.
What Separates Profitable Sellers
The resellers who consistently make money share a few habits. They use scanning apps (like the Amazon Seller app) to check fees, sales rank, and competition before buying any product. A low sales rank means the item sells frequently, which reduces the risk of it sitting in a warehouse collecting storage surcharges. They set minimum profit and ROI thresholds and walk away from deals that don’t meet them, no matter how tempting the discount looks.
Category selection matters. Categories with 15% flat referral fees and low return rates (home goods, toys, certain grocery items) tend to be friendlier for resellers than categories with tiered fees, high returns, or heavy competition from the brands themselves. Selling in a category where Amazon is also a direct seller often means competing against someone who controls the platform and can undercut your price.
Inventory turnover is arguably the most important metric. Products that sell within 30 to 60 days keep your capital working and avoid aged inventory surcharges. Products that linger for months tie up cash you could reinvest and start racking up extra fees. Profitable resellers would rather make a smaller margin on a fast-selling item than a larger margin on something that takes four months to move.
Is It Worth Starting?
Reselling on Amazon is a real business with real profit potential, not a get-rich-quick scheme. The barrier to entry is low, especially with retail arbitrage, and you can start with a few hundred dollars to test whether you enjoy the process and can find reliable product sources. The sellers who struggle are usually the ones who buy inventory without calculating all fees first, let products age in warehouses, or underestimate the time commitment. The ones who succeed treat it like a margin business: disciplined about costs, fast on inventory turnover, and realistic about what the numbers actually say after every fee is subtracted.