Q4 Merchandising and Stock: Deciding What to Promote

Almost every Q4 plan starts with the offer and the media, and treats the question of what to actually sell as an afterthought handled by whoever runs the store. That order is backwards, because your stock position constrains everything downstream. There is no point producing thirty pieces of creative for a product that will sell out on the second day, and no point advertising a bestseller whose margin cannot survive the discount you have chosen. Merchandising is the decision that makes the other decisions possible, and September is when it should happen.

Q4 merchandising is the process of deciding which products carry your peak trading: which become heroes in advertising and email, which appear only inside bundles, which are excluded from the offer, and what happens operationally when something sells out mid-peak.

How Do You Choose the Heroes?

By crossing three things, none of which is how well a product normally sells.

Margin after discount comes first. Take each candidate, apply the promotional depth you have planned, subtract cost of goods, shipping and payment fees, and look at what remains. Products that clear your margin floor comfortably can carry advertising. Products that clear it barely should not be the thing you spend money driving traffic to, because acquisition cost sits on top of that number, per the arithmetic in our unit economics guide.

Stock depth comes second, and it is the most commonly ignored. A product with four weeks of cover at normal sales rates has considerably less than four weeks at peak volume, and a hero that sells out in week one has converted your creative investment into a landing page full of unavailable items. Work out cover in units at expected peak rate rather than at current rate, and be conservative, because the cost of underestimating is worse than the cost of holding.

Gifting suitability comes third and is genuinely different from normal purchase suitability. Products that are easy to buy for someone else, meaning no size or fit decision, broad appeal, presentable and giftable, outperform products that require the buyer to know something specific about the recipient. Your bestseller for self-purchase is not automatically your best gift, and treating those as the same thing is one of the more expensive Q4 assumptions, which is why we treat the gift buyer separately in our post on marketing to gift buyers.

A product scoring well on all three is a hero. Two out of three means it belongs in the sale but not in the advertising. One out of three means it belongs inside a bundle or nowhere.

How Should Bundles Be Built?

From your stock position rather than from your bestseller list, which is the opposite of instinct.

The temptation is to bundle your two best products, which sells things that were going to sell anyway and gives away margin on both. The better construction pairs a genuine hero with something you hold deep stock in, ideally something that would otherwise be discounted in January. That combination does three jobs at once: it raises average order value, it moves inventory you need to move, and it generates a perceived saving that comes partly from the combination rather than entirely from your margin. The mechanic economics are covered in our BFCM offer strategy post, and the order value case in our guide to increasing AOV.

Two practical points. Bundles need their own product pages and feed entries to be advertisable, which is a build task worth doing in September rather than the week before. And a bundle should be a genuine reason to buy rather than a clearance mechanism wearing a bow, because customers can tell the difference and the ones who cannot will notice when the product arrives.

What Should Be Protected From the Discount?

Anything that will sell at full price during peak demand, which is usually more than you think. When demand rises, discounting a product that people were going to buy anyway is the purest form of margin donation, and holding one or two hero items at full price while offering them inside bundles keeps them available without paying for the conversion.

Also protect anything in genuinely short supply. Discounting a product you are going to run out of accelerates a stockout you did not need to have, and turns a scarce item into a scarce discounted item, which is worse in every direction.

What Happens When Something Sells Out?

Something will, so this needs to be a written playbook rather than a reaction. Five steps, decided in September and owned by one named person.

Automatic removal from advertising. Out of stock products should drop out of ads and feeds without anyone remembering, because paying for traffic to an unavailable product is the most straightforwardly wasteful thing that can happen in a peak week. Feed rules and inventory-driven exclusions handle this, and the setup sits in our product feed optimisation guide.

Budget redirection. Decide in advance which product the spend moves to, so the decision is a lookup rather than a debate at nine at night.

Creative substitution. This is why banked fallback assets matter, and why creative planning and merchandising have to happen together rather than sequentially, per our Q4 creative strategy.

Back in stock capture. A sold-out product page should collect email or SMS interest rather than simply apologise, which converts a dead end into a list.

Comms correction. Any scheduled email or SMS featuring the product needs changing, which is the step most often missed and the one customers notice most, since being sent an offer for something unavailable is a small betrayal at the worst moment.

How Do You Handle Slow-Moving Stock?

Inside bundles and gift sets, not as a standalone discount. A deep discount on a slow product tells customers the product was overpriced, attracts buyers who value it at the discounted price permanently, and rarely produces a repeat customer. Bundled with something desirable, the same unit moves without a public statement about its value, and the customer experiences it as added value rather than as clearance.

Where the stock genuinely has to go, the least damaging routes are a gift with purchase above a spend threshold, which converts dead inventory into a conversion incentive at a known cost, or a members-only offer to your loyalty segment, which keeps the discount out of public view, per our loyalty programmes guide.

Why Does This Have to Happen Before Creative?

Because what you can supply determines what you should film. A brand that produces its Q4 creative in September against a hero list that changes in November has wasted the production, and a brand that produces creative for a product with three weeks of stock cover has bought assets it can use for three weeks.

So the sequence is: merchandising decisions, then creative brief, then production, then feeds and landing pages, then the send calendar. Every one of those depends on the list of products above it. Get the order wrong and each stage quietly invalidates the last, which is the most common reason a well-funded Q4 plan feels chaotic despite everyone doing their job properly. The phasing sits in our Q4 profit trap piece and the operational checks in our peak season readiness audit.

What Should You Track During Peak?

Units sold against cover remaining for every hero, daily, so a stockout is a forecast rather than a surprise. Then contribution margin by product rather than in aggregate, because an aggregate figure hides one hero quietly losing money on every order. Bundle take-up against single-item orders, which tells you whether the AOV mechanic is working. And sell-through on the stock you were trying to clear, so you know in early December whether January will involve a clearance problem.

The Bottom Line

Choose heroes on margin after discount, stock depth and gifting suitability rather than on normal sales rank. Build bundles from what you hold, not from what already sells. Protect the products that will sell at full price. Write the stockout playbook before you need it. Use bundles rather than discounts to move slow stock. And do all of it before creative production starts, because everything downstream depends on the list.

Our Biggest Q4 Guide Lands Soon

We are finishing the full Q4 profit playbook, including the hero selection matrix and the stockout playbook we build with client brands. Our newsletter list gets it first. Join at webtopia.co/newsletter to be first to get it, plus every platform change that matters each Tuesday in Beyond the Clicks.

Want Help Choosing Your Q4 Heroes?

Book a call and we will work through margin, stock cover and gifting fit before creative production starts, part of how we work as an ecommerce marketing agency.

Frequently Asked Questions

How do you decide which products to promote in Q4?

By crossing margin after discount, stock depth and gifting suitability. A product scoring well on all three is a hero; thin margin or shallow stock means it should not carry your advertising.

Should you advertise products with limited stock?

Only briefly and with a plan for the stockout. Advertising into a stockout means paying for traffic that cannot convert, so removal automation should be in place before peak.

How should bundles be built for Q4?

From your stock position rather than your bestseller list. Pair a hero with something you hold deep stock in, which raises order value and moves inventory without giving away margin on both items.

What should you do when a hero product sells out mid-peak?

Follow a written playbook: automatic removal from ads and feeds, budget redirected to a named alternative, banked substitute creative, back in stock capture, and scheduled comms corrected.

How do you handle slow-moving stock in Q4?

Inside bundles and gift sets rather than as a standalone discount, which protects price perception and gives the product a reason to be chosen.

When should Q4 stock decisions be made?

Before creative production starts, because what you can supply determines what you should film and write.