An e-commerce business sells products online, whether that's a branded physical product line you own, print-on-demand, a dropshipped catalog you never touch, or digital goods like templates or downloads. It's the model people picture first when they think "online business," and the physical-goods version is also one of the more operationally demanding ones on this list, because unlike a content site or SaaS product, there's a real, physical cost of goods sold (COGS) behind every single sale.
What running one actually looks like day to day
You're managing inventory or a supplier relationship (reordering before you stock out, without over-ordering and tying up cash), answering customer service emails about shipping and returns, and running paid advertising on an ongoing basis, since e-commerce rarely coasts on organic search traffic the way a content site sometimes can. If you're doing fulfillment yourself rather than using a third-party logistics (3PL) provider or Fulfillment by Amazon (FBA), add packing and shipping to that list. This is a business with recurring operational tasks every week, not one you check in on occasionally.
Typical profit margins
| Line item | Typical range | What drives it |
|---|---|---|
| Gross margin (branded direct-to-consumer (DTC)) | 50% to 70% | Product cost plus payment processing, before ad spend and fulfillment. TrueProfit's analysis of 5,000-plus stores puts the range that supports profitable scaling at 60% to 70%[1]. |
| Net margin (well-run branded store) | 10% to 20% | After customer acquisition cost (CAC), fulfillment, customer service and platform fees. TrueProfit's benchmarking work puts a 10% to 20% net margin as a solid benchmark for a well-run store[2]. |
| Gross margin, dropshipping (never touch inventory) | 10% to 30% | Thinner because you're paying a supplier's markup on top of their own cost. Dropshipping margins typically fall in the 10% to 30% range[3], even though avoiding warehousing costs helps offset the thinner unit economics. |
| Net margin, self-distribution (you hold inventory, pack and ship it yourself) | 15% to 30% | You keep the fulfillment fee a 3PL or Amazon would otherwise charge, but you're carrying the labor, warehouse and shipping-labor cost instead. SellerSprite's FBM margin analysis puts healthy self-fulfilled margins at 15% to 30%[4]. |
| Net margin, autofulfillment (FBA or a 3PL picks, packs and ships) | 15% to 25% | You trade a slice of margin for speed and for not touching a box yourself. ZonGuru's benchmarking puts a good Amazon FBA net margin at 15% to 25%, with most sellers averaging 15% to 20%[5]. |
| Typical sale multiple | 2.5 to 4x annual seller's discretionary earnings (SDE) | Standard range on marketplaces like Empire Flippers, Website Closers and Flippa for stores with 12+ months of stable performance. Flippa's 2026 valuation-multiples data puts most e-commerce sales at 2.5x to 4x SDE[6], and Empire Flippers frames the same range as a 30x-to-50x monthly-profit multiple[7]. |
Fulfillment model is one of the biggest levers on that net margin line, and it's a choice you can change after you buy, not just a fact about the business as it exists today. Dropshipping keeps you furthest from the product but caps your margin the lowest. Self-distribution gives you the widest margin because you're not paying anyone else's fulfillment fee, at the cost of your own time and a warehouse lease. Autofulfillment sits in between: you give up a predictable slice of margin to Amazon or a 3PL in exchange for not packing a single box yourself.
Pros
- A real, tangible product that customers can see, touch, and evaluate before buying, which generally means lower marketing skepticism than a purely digital offer.
- Multiple viable acquisition channels (paid social, Google Shopping, marketplaces like Amazon and Etsy, organic content), so you're not dependent on a single traffic source the way a content site often is.
- Repeat purchase and subscription mechanics (subscribe-and-save, replenishment reminders) can meaningfully improve customer lifetime value once in place.
- Physical inventory is a real, sellable asset on the balance sheet, unlike a content site's traffic or a SaaS product's code.
Cons
- Real cost of goods sold means margin compression is constant. Supplier price increases, shipping cost spikes and tariff changes hit your bottom line directly and immediately.
- Paid advertising is an ongoing cost, not a one-time setup expense. Rising CAC on Meta and Google, driven by more advertisers bidding on the same audiences, is a standing pressure on margin that a seller's trailing numbers won't necessarily reflect going forward.
- Cash gets tied up in inventory. You typically have to pay a supplier weeks or months before you collect from a customer, which creates real working-capital risk, especially heading into a seasonal peak.
- Platform dependency risk on both ends: a Meta ad account ban or an Amazon account suspension can stop revenue instantly, with an appeals process that can take weeks.
- Customer service and returns are a constant, ongoing time cost that scales roughly with order volume, unlike a content site's mostly fixed workload.
Skills and time required
You need enough comfort with paid advertising (Meta Ads, Google Ads, or both) to run or manage campaigns, since organic traffic alone rarely sustains an e-commerce business at scale. Basic supply chain literacy matters: knowing how to negotiate with a supplier, forecast reorder timing, and manage a purchase order. Some owners outsource fulfillment entirely to a 3PL or FBA, which reduces the physical workload but not the inventory-planning and cash-flow skill required. Expect this to require several hours a week at minimum, more during peak seasons like Q4.
What is a SKU
A SKU, short for stock keeping unit, is the unique code a store assigns to each individual product it sells, down to the variant. A T-shirt in size medium and the same shirt in size large aren't one product with two sizes as far as the store's systems are concerned; they're two separate SKUs, each with its own inventory count, reorder point, and sales history. A store with 30 "products" on its site might actually carry 200 SKUs once every color and size combination is counted separately.
That level of detail is exactly what a buyer needs and a summary P&L doesn't provide. Total revenue and even category-level revenue can look healthy while hiding the fact that one or two SKUs are doing almost all the work. Ask the seller for a revenue and gross-margin breakdown by SKU covering at least the trailing 12 months, not just the current best-sellers list. If a small handful of SKUs account for the bulk of revenue, you're not buying a diversified catalog, you're buying exposure to whichever products happen to be on top right now, and if a supplier discontinues one, a competitor undercuts it on price, or a platform stops surfacing it in search results, the business's economics can shift within a single quarter. "Revenue is up 20% year over year" and "70% of that revenue comes from one SKU that's been out of stock twice this year" can both be true of the same business at the same time, and a broker's summary memo will rarely volunteer the second fact on its own.
For a small brand, somewhere around 50 to 150 active SKUs is the range that tends to work, with roughly 75 cited as the average for profitable small operations[8]. The consequences run in both directions:
- Too few SKUs concentrates the entire business in one or two products. That's the concentration risk described above: a single discontinued input, a single copycat competitor, or a single lost marketplace listing can gut revenue overnight, and there's no second or third product line to absorb the hit while you fix it.
- Too many SKUs (past roughly 150 to 200 for a small operation) spreads working capital thin across slow-moving variants, and the complexity doesn't scale in a straight line, it compounds. Inventory turnover below about four times a year on a chunk of the catalog is a sign that cash is sitting on a shelf instead of funding the next order. Fulfillment error rates climb, marketing has to speak to more products with the same budget, and dead stock quietly erodes margin long after it's stopped selling.
Neither extreme is a dealbreaker on its own, but it changes what you're underwriting. A tight, 20-SKU store can still be a good buy, you're just buying a bet on those 20 products specifically, and you should price and structure the deal accordingly rather than assuming it behaves like a diversified 100-SKU catalog.
What to check before buying one
Get the actual supplier agreements and confirm they transfer to a new owner. A store with one supplier and no backup is fragile in a way the profit and loss statement (P&L) won't show you. Check the trend in return on ad spend (ROAS) over the past 12 to 24 months, not just the current month, since a seller preparing to sell sometimes cuts ad spend to inflate short-term profit. Ask for the SKU-level revenue breakdown described above. A store where 80% of revenue comes from one product has a concentration risk that a broker's summary memo often won't surface on its own.
Real examples: Warby Parker started as a direct-to-consumer online eyewear store built around a single product line, controlling its own design and manufacturing to protect margin. Chewy shows the other end of the spectrum, a commodity-product retailer that competes on logistics and selection rather than product differentiation, and carries a materially thinner margin as a result.
Sources
- [1]TrueProfit: good gross profit margins for e-commerce, based on 5,000+ stores ↩
- [2]TrueProfit: e-commerce profit margin benchmarks ↩
- [3]Spark Shipping: dropshipping margins, a complete guide ↩
- [4]SellerSprite: Amazon FBM (self-fulfillment) profit margin calculator and benchmarks ↩
- [5]ZonGuru: what's a good net profit margin for Amazon sellers ↩
- [6]Flippa: e-commerce valuation multiples ↩
- [7]Empire Flippers: e-commerce business valuation guide ↩
- [8]Rewarx: how many SKUs is too many for small brands ↩
Next: SaaS runs on subscription revenue and near-zero marginal cost per customer, a fundamentally different economic engine than physical inventory.