Learn how to choose products to sell on Amazon using a proven, data-led framework covering demand, margins, competition, and category research.
Choosing the right products to sell on Amazon is the single decision that shapes everything else: your margins, your ad spend, your returns rate, and your long-term growth trajectory. Get it wrong and you spend months (and thousands of pounds) swimming against the current. Get it right and every pound you put into advertising, listing optimisation, and stock has a multiplying effect.
This post lays out the exact framework we use at Reflex when advising brands on product selection and range expansion. It is built on real category data, margin modelling, and the patterns we see across dozens of accounts. Whether you are launching your first product on Amazon or deciding which SKUs in your existing catalogue deserve priority, this framework will give you a structured, repeatable way to make that call.
Why Product Selection Is the Highest-Leverage Decision You Will Make
Most brands that come to us with stagnating Amazon revenue are not failing at advertising or listing quality. They are failing at product-market fit on the platform. They have listed their full catalogue without asking a fundamental question: does demand for this product actually exist on Amazon, and can I compete profitably?
Amazon is not a “build it and they will come” platform. The categories with the highest revenue (Home and Kitchen, Beauty, Electronics) are also the most competitive. A product that sells well on your own website or in retail may perform differently on Amazon, where customers compare five alternatives side by side and make a decision in under 90 seconds.
The brands that grow fastest are the ones that treat product selection as a strategic exercise, not an afterthought. They choose which products to push, in what order, based on data rather than gut feeling.
Step 1: Validate Demand Before You List
The first filter in any product selection process is demand. If customers are not actively searching for your product (or something very close to it) on Amazon, no amount of advertising will create sustained sales.
Amazon’s own Product Opportunity Explorer is a free tool available to all Professional sellers that groups customer search terms into “niches” based on the products people view and buy after searching. It shows you search volume, purchase behaviour, pricing trends, and competitive density for any niche you care about.
Here is how we use it: Start by entering 5 to 10 seed keywords that describe your product. Look at the niche-level data: how many searches per month does this niche receive? What is the average selling price? How many products are competing? A niche with strong search volume (above 10,000 monthly searches) but fewer than 200 competing products is a signal worth paying attention to.
Cross-reference this with external tools like Helium 10’s Cerebro or Jungle Scout to validate keyword search volumes and see estimated monthly unit sales for the top-ranking products. If the top 10 products in your target niche are each selling 300+ units per month, demand is proven. If the top products are struggling to move 50 units, that niche may not be worth your investment.
Step 2: Model Your Margins Ruthlessly
Demand without margin is a trap. We see brands chase high-volume categories only to discover that after Amazon’s referral fees, FBA fulfilment costs, advertising spend, and returns, they are breaking even or losing money on every unit sold.
Here is the maths you need to run before committing to any product:
Start with your selling price. Subtract the referral fee (8% to 15% depending on category; most consumer goods categories sit at 15%). Subtract FBA fulfilment fees, which increased by an average of £0.06 per unit in 2026. Subtract your cost of goods, inbound shipping, and an estimated return rate for your category (typically 5% to 15% depending on the product type). What remains is your gross margin before advertising.
We advise brands to target a minimum of 30% gross margin before ad spend. This gives you room to invest 10% to 15% of revenue into advertising and still maintain a healthy 15% to 20% net margin. Products with gross margins below 25% tend to become unprofitable the moment you need to run promotions or compete on price during peak periods like Prime Day or Black Friday.
A practical example: if your product sells for £25.00 with a 15% referral fee (£3.75), FBA fee of £3.50, and COGS of £5.00, your gross margin is £12.75, or 51%. That is a healthy product. If the same product sells for £12.00, the same fixed costs eat into a much larger proportion of revenue, and your margin may shrink to 15% or less. Price point matters.
Read more about this in our post: Amazon Seller Fees UK: What Does Amazon Take From Your Sales in 2026?
Step 3: Assess the Competitive Landscape
A profitable product with strong demand can still fail if the competitive landscape is too dense or too established. The question is not “are there competitors?” (there always are) but “can I compete credibly?”
Look at the top 10 listings in your target niche. How many reviews do they have? If every competitor has 5,000+ reviews and you are starting from zero, you face a significant trust gap. Products with review counts under 500 across the top 10 represent more accessible opportunities.
Check whether the top positions are dominated by Amazon’s own brands or by major household names with deep advertising budgets. If the first page is all Procter and Gamble and Unilever, your route to visibility will be expensive.
Examine listing quality, too. If the top competitors have poor images, thin bullet points, no A+ Content, and no Brand Store, that signals an opportunity. You can outperform them on execution. If they all have polished listings, strong Brand Stores, and heavy ad coverage, you will need to match that investment from day one.
We run this kind of competitive and category analysis for brands regularly, mapping out the top 100 products in a category with estimated revenue, pricing, keyword coverage, and review counts. It turns a gut feeling into a data-backed decision.
Step 4: Consider Operational Complexity
Not every product is equally simple to sell on Amazon. Certain categories carry higher operational risk that can erode your margins in ways that are not immediately obvious.
Products that are fragile, heavy, or oddly shaped attract higher FBA fees and more frequent damage claims. Items in the grocery or health and beauty categories may require specific certifications, restricted category approvals, or compliance documentation. Seasonal products can deliver strong Q4 revenue but leave you with dead stock in January.
The best products for Amazon tend to share a few characteristics: they are lightweight (under 1kg ideally), durable enough to survive Amazon’s fulfilment process, and have year-round demand rather than sharp seasonal peaks. They also tend to sit in the £15 to £45 price range, which is the sweet spot where customers are willing to buy online without extensive deliberation but where margins remain workable.
If your product requires complex assembly instructions, has a high return rate by nature (fashion and apparel average 20% to 30% returns), or needs temperature-controlled storage, factor those costs into your margin model from the start. The number of brands we have seen underestimate return rates is significant.
Step 5: Prioritise Your Catalogue Strategically
For brands with an existing product range, the question is rarely “should we sell on Amazon?” but “which products should we prioritise?”
We recommend a tiered approach. Start by identifying your “hero SKUs,” the 3 to 5 products with the strongest combination of demand, margin, and competitive viability. Launch and optimise those first. Build reviews, refine your advertising, and establish your Brand Store around them.
Once your hero SKUs are performing, expand into your second tier: products that complement your heroes and can benefit from cross-selling through Sponsored Display and Brand Store navigation. A beauty brand, for example, might lead with a best-selling moisturiser, then expand into the cleanser and serum that pair with it.
Resist the temptation to list your entire catalogue on day one. Every additional ASIN requires advertising investment, listing optimisation, stock management, and ongoing maintenance. Spreading your budget across 50 products when you could concentrate it on 5 strong ones is one of the most common mistakes we see. The brands that grow fastest on Amazon are the ones that go deep before going wide.
Step 6: Test Before You Commit
Even with thorough research, some products will underperform. The best operators build testing into their process.
Run a 90-day test period for each new product. Set a clear success benchmark: a target number of units sold per month, a maximum ACOS threshold, and a minimum conversion rate. If the product hits those benchmarks within 90 days (with properly optimised listings and adequate ad spend), scale it. If it does not, diagnose whether the issue is the product itself, the listing quality, or the competitive dynamics, and make a decision about whether to iterate or move on.
What to Do Next
If you are evaluating products to sell on Amazon (or reassessing your existing range), start with these three actions this week:
Open Amazon’s Product Opportunity Explorer and run your top 10 seed keywords. Look at search volume, average price, and competitive density. Shortlist 3 to 5 niches that show strong demand with manageable competition.
Build a margin model for each shortlisted product. Include referral fees, FBA fees, COGS, inbound shipping, estimated returns, and a 10% to 15% advertising allocation. If the net margin falls below 15%, reconsider the product or the price point.
Audit the top 10 competitors in each shortlisted niche. Count reviews, assess listing quality, and note whether the category is dominated by major brands. If you can see clear room to compete on execution, that niche deserves your investment.
For a deeper look at how we approach this for our clients, this post on starting an Amazon business covers the operational foundations that support strong product selection.
Get Expert Eyes on Your Product Strategy
Product selection is one of those decisions that looks simple on the surface but compounds over time. The difference between a good choice and a great one can be tens of thousands of pounds in revenue over a 12-month period.
If you want a second opinion backed by category data and years of Amazon expertise, book a free consulting call with Reflex and we will walk through your product opportunity together. You can also follow Steve Herrington on LinkedIn for regular insights on Amazon growth strategy.