The most consistent fashion buying mistake I see is a buyer relying on a good eye and assuming the commercial side will follow. It rarely does on its own, and it is the clearest thing separating buyers who plateau from buyers who move into leadership.
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The Fashion Buying Mistake Nobody Names
Most people assume that a great buyer is someone with excellent taste. Having hired a large number of buyers across my career, I would put it almost the other way round.
I interviewed an assistant buyer once who could identify emerging trends, had genuinely impeccable taste and worked long hours. When I asked her what a five per cent margin decrease on our denim category would do to quarterly profit, she had nothing to say.
That pattern repeats constantly. Creative people with real potential who cannot connect their decisions to a business outcome. The instinct is not the problem, and it is not enough on its own.
Podcast Thrive in Fashion Buying & Merchandising
Episode 036, The Mistake I See Most Often When I Hire Fashion Buyers.
The most useful thing you can do with this is find out which of the four areas is actually your gap, rather than assuming. The free Fashion Buyer Skills Assessment works like a personal SWOT for buyers and takes a few minutes.
Creative Thinking and Commercial Thinking, Side by Side
Take something ordinary. You are buying knitwear for autumn winter.
The creative read says chunky knits are trending and customers respond to them. That is useful information and it is where most buyers stop.
The commercial read asks a different set of questions. What is the cost per unit against our target retail? How does the longer production timeline affect the delivery schedule? If we put 30 per cent of the knitwear budget here, which category loses out?
Neither read works alone. You apply the numbers to support the product, and the product has to be right for the numbers to be worth anything. What you are aiming for is the hybrid, and most buyers arrive strong on one half and expect the other to appear with time.
Skill One: Margin Impact Understanding
The first commercial skill is running the sequence automatically rather than after the fact.
You are at a trade show and you find a dress you want. The calculator brain has to engage immediately. At 45 wholesale you need a 2.5 multiplier to hit target margin, which puts it at 112.50 retail. Then the second question, which matters as much as the first: will your customer pay that for your brand?
If she will not, you negotiate the cost down, change the specification, or pass. That thought process is what prevents the classic error of buying beautiful product you cannot price profitably, and it has to happen before you have talked yourself into something.
Skill Two: Open to Buy and Cash Flow
The second is understanding your budget as a cash flow tool rather than a pot of money.
I watched a buyer commit 80 per cent of her spring budget by February because she had not understood the timing. She saw good product and bought it, and forgot she still needed stock for April and May deliveries. The product judgement was sound. The phasing was not.
The alternative is monthly purchase plans tied to sales projections and stock turn, constantly balanced against each other. It sounds administrative and it is the difference between having capacity when a trend appears in March and having to watch it pass.
Skill Three: Critical Path Judgement
The third is what you do when a timeline breaks, which it will.
Your supplier hits production delays and the winter knitwear that should land in October now arrives in January. A creative buyer panics. A commercial buyer treats it as a problem with options and works through them.
What are the backup plans? Is an alternative supplier viable at this stage? What does air freight instead of sea do to the cost, and does the margin still work? And, uncomfortably, is the right answer to cancel part or all of the order? All four are legitimate. Knowing which one applies is the skill.
What This Looks Like Week to Week
The habit worth building is running one product decision a week through the full commercial chain, from cost to margin to expected sell-through to the effect on your remaining budget. It takes twenty minutes and it is the single most efficient way to convert commercial knowledge into commercial instinct.
The reason it works is that instinct is pattern recognition, and pattern recognition needs repetition. Reading about margin does not build it. Applying it to a real decision you care about, forty times a year, does.
There is a fourth response worth naming, which is the one buyers reach for least and often should reach for first: renegotiating the terms rather than the timeline. A supplier who has caused a delay is in a weaker position than usual, and a contribution to markdown or a discount on the delayed shipment is a reasonable thing to ask for. Buyers frequently absorb the commercial cost of somebody else’s problem because it did not occur to them that it was negotiable.
The Four Areas Worth Assessing Yourself Against
Rather than working harder across everything, it is far more useful to know which specific area is weak. There are four.
- Product knowledge. Deep understanding of what you are buying: current trends, materials, fit, quality standards, and how product performs with your specific customer. Knowing your market well enough to predict what will sell rather than react to it.
- Commercial ability. Margins, pricing strategy, sales performance, stock turn, and how each buying decision affects profitability. Thinking like a business owner who happens to buy product, rather than someone who selects nice things.
- Process skills. Managing the buying cycle: critical path timelines, supplier relationships, coordination across teams, sample management, and keeping several moving parts on track from concept to delivery. This requires you to be organised, systematic and accountable.
- Soft skills. Communication, influence, presence. Presenting ideas confidently, negotiating well, building relationships across teams, and demonstrating the qualities that signal readiness for more responsibility.
The practical value of assessing yourself against these is what it lets you say in a review. There is a considerable difference between telling your manager you want to grow and telling her you have identified a gap in margin analysis and have a development plan for it. One is an aspiration. The other is evidence that you are already operating at the level you are asking for.
Why This Gap Exists at All
It is worth being fair about where this comes from, because it is not a personal failing.
Fashion schools are designed to nurture creativity, which is necessary and valuable. They operate as art schools rather than business schools. Companies then assume the commercial skills will be picked up on the job, and there is usually no formal training. You are expected to absorb it by osmosis while managing significant amounts of stock.
I mentored a buyer two years into his career who was creatively strong and struggling in performance reviews. We spent six months on commercial fundamentals: building buy plans, tracking margin performance, communicating business impact. Within twelve months he moved into a senior buying role with substantial budget responsibility. Nothing about his product instinct changed. The other half of the job was simply no longer missing.
Elisabeth's Final Thoughts
The buyers who become leaders are not usually the most creative people in the room. They are the ones who can hold the aesthetic judgement and the business reality at the same time, and defend both. Product instinct is genuinely hard to teach, so if you have it, you are starting from a good position. The commercial half is entirely learnable, it is specific enough to be identified and worked on deliberately, and nobody is going to hand it to you.
Fashion Buying Mistakes FAQs
Relying on product instinct without the commercial skill to support it. A good eye gets you noticed and it does not get you promoted, because it cannot answer what happens to quarterly profit if margin on a category drops by five per cent. The buyers who plateau are usually creative and unable to connect their decisions to business outcomes.
Four areas: product knowledge, commercial ability, process skills and soft skills. Most buyers are strong in one or two and assume the others will develop with time. Progression usually stalls in the area nobody has assessed, which is why identifying the specific gap matters more than working harder across all four.
It is necessary and not sufficient. Product instinct is the harder thing to teach, so it is a genuine asset. What determines whether a career progresses is whether that instinct sits alongside margin understanding, budget management and critical path judgement. The strongest buyers hold both, and neither works without the other.
The habit of running the commercial sequence automatically when you see a product. At 45 wholesale you need a 2.5 multiplier to hit target margin, which puts retail at 112.50, and then the second question of whether your customer will pay that for your brand. It prevents the classic error of buying beautiful product you cannot price profitably.
Assess yourself deliberately across the four areas rather than assuming experience will cover them. Being able to say you have identified a gap in margin analysis and have a development plan for it is a far stronger position in a review or promotion conversation than saying you want to grow.
