How to find products to sell online: a step-by-step method for choosing what to sell

Short answer: Don't start from a list of "hot products". Start from ideas you can source and explain better than most sellers, then put each one through the same filter: is there steady demand, does the margin survive shipping and fees, is it easy to ship, and are there rules you must meet before selling it? Narrow it down to one or two products and test them with a small batch before you buy stock in bulk. The test only tells you something if you can see what each order really earned, which is easier on an online store that shows the real profit of every order.

Why "what to sell online" is the wrong first question

Lists of the best things to sell online go stale quickly, and by the time a product appears on one, many other sellers have read the same list. A better question is: what can you sell that a customer would rather buy from you? That usually comes down to one of three advantages:

• Knowledge. You understand a hobby, trade or problem well enough to pick better products and answer questions others can't.
• Access. You have a supplier, maker, family business or local product that isn't widely available online.
• Audience. You already reach a group of people (a community, a social account, existing customers) and know what they ask for.

Write down 10–20 ideas that fit at least one of these. Then use the steps below to cut the list down.

Step 1: Collect ideas where demand already shows

You don't need paid tools to find out what people look for. Useful free sources:

• Search autocomplete. Type a product type into Google and note what it suggests: "for small spaces", "for dogs", "without plastic". Suggestions reflect what people search for, and the modifiers often point to an underserved angle.
• Marketplace bestseller lists and reviews. Look at bestseller lists in your category, then read the three- and four-star reviews of popular products. Repeated complaints ("too small", "broke after a month", "no instructions") are product ideas.
• Communities and forums. Questions people ask again and again in a hobby forum or group show a need that hasn't been solved well.
• Your own customers or audience. If you already sell anything, the questions in your inbox are the cheapest market research you will ever get.

Step 2: Check demand with Google Trends, carefully

Google Trends shows whether interest in a search term is rising, falling, steady or seasonal. Read it the way Google describes it in its own help pages:

• The numbers are relative, not search counts. Each data point is divided by total searches in that place and time range and scaled from 0 to 100.
• The data comes from a sample of searches, with small random fluctuations added for privacy, which are most visible for low-volume terms. A sudden spike on a niche term may be noise.
• Very low-volume searches show as 0.

So use Trends for shape and comparison, not size. Set the range to five years to see seasonality (a product that peaks only in December needs a different cash plan), compare two or three versions of the same idea side by side, and switch the country between the US and the UK if you plan to sell in both. A term that has drifted steadily downward for years is a warning; a steady or slowly rising line is what you want.

Step 3: Do the margin math before you fall in love

A product people want can still lose money. For each idea, estimate what one order leaves you. An illustrative example, with every number an assumption:

• Selling price — $40.00
• Product cost from supplier — -$12.00
• Shipping and packaging — -$8.00
• Payment processing fee (assumed 3%) — -$1.20
• Advertising cost per order (assumed) — -$10.00
• Left per order — $8.80

If that last line is thin or negative, the product needs a higher price, a cheaper supplier or a lower cost to acquire each customer. Shipping is the line people most often underestimate; we explain how to work out your real cost per parcel in how much to charge for shipping.

Step 4: Check how it ships

Small, light, sturdy products are easier to sell online than bulky, fragile or heavy ones. Carriers price light but large parcels by dimensional weight, so a bulky, light product can cost more to send than a small, heavy one. Before you commit, ask:

• Will it fit a standard mailer or small box?
• Will it survive being dropped?
• Does it come in sizes or fits that customers are likely to get wrong and send back?
• Is it perishable, liquid, flammable or battery-powered? Check your carrier's restrictions before you list it.

Step 5: Check the rules before you buy stock

Some product categories come with legal requirements that are easy to miss:

• Children's products in the US. If a product is designed mainly for children 12 or younger, the US manufacturer or importer must issue a Children's Product Certificate based on testing by a CPSC-accepted third-party lab. If you import toys or baby products yourself, that's you.
• Shipping promises in the US. The FTC's Mail, Internet, or Telephone Order Rule requires a reasonable basis to expect you can ship within the time you state, or within 30 days if you state no time. If you can't, you must let the customer agree to the delay or cancel for a prompt refund. This matters if a supplier ships slowly, as is common with dropshipping from overseas.
• Product safety in Great Britain. Under the General Product Safety Regulations 2005, consumer products must be safe in normal or reasonably foreseeable use, with duties for both producers and distributors. Some categories also have product-specific rules on top of that, so check the current GOV.UK guidance for your category.

If a category needs testing or certification you can't afford yet, choose a different first product.

Step 6: Decide how you will source it

• Make it yourself — How it works: You produce the product; Good for: Unique products, high margins; Watch out for: Your time limits how much you can sell
• Wholesale — How it works: Buy finished products in bulk from a brand or distributor; Good for: Known products, quick start; Watch out for: Competing on price with other resellers
• Dropshipping — How it works: Supplier ships each order directly; Good for: Testing ideas without stock; Watch out for: Slow delivery, little control over quality
• Private label — How it works: A manufacturer makes a product under your brand; Good for: Building a brand; Watch out for: Minimum order quantities, upfront cost

Order samples from any supplier before you list a product. Check the quality, the packaging and how long delivery really takes.

Step 7: Test small, then scale what works

Launch with a small batch or a handful of products, run a modest amount of traffic to them (we cover where it can come from in how to drive traffic to your online store), and watch three numbers for a few weeks: how many visitors buy, what each order actually earns after costs, and how many come back as returns. Keep what works, drop what doesn't, and only then order in bulk. Once a product passes the test, how to start an online store covers the steps from business setup to launch. Reviewing these numbers is part of the routine we describe in how to manage an online store.

How Favenda helps

Favenda shows the real profit of each order after shipping and payment costs, so a product test tells you what you earned, not just what you sold. You set shipping rates by weight or by size and can add a free shipping threshold. If you test in more than one country, each sales region gets its own currency, payment methods and shipping rates, and DHL Express, UPS and FedEx are built in with labels printed from the order screen. There are no transaction fees on your sales. The Store plan is $59 a month excluding tax, with two months free when you pay annually.

See Favenda →

FAQ

How do I find trending products to sell online?
Collect ideas from search autocomplete, bestseller lists and community questions, then check them in Google Trends over a five-year range. Look for steady or slowly rising interest rather than a single spike, which may be a fad or statistical noise.

How do I choose the best product to sell online?
Score each idea on demand, margin after shipping and fees, how easily it ships, and whether it needs testing or certification. The best first product is usually the one that passes all four, not the one with the biggest search interest.

Do I need to buy inventory to start?
No. You can test with dropshipping or a small batch. Dropshipping avoids stock but gives you less control over delivery times and quality, so order samples first and only promise delivery times you can keep.

Sources: Google Trends Help, "FAQ about Google Trends data"; U.S. Consumer Product Safety Commission, "Children's Product Certificate"; Federal Trade Commission, "Business Guide to the FTC's Mail, Internet, or Telephone Order Merchandise Rule"; GOV.UK, "General Product Safety Regulations 2005" guidance. All read on 23 October 2026. Rules change and vary by product; check the current guidance for your category before you sell.