Retail Packs and Wholesale Cases Need Different Order Math

A shop that buys 72 units, splits them into retail packs of three, and sells some of them as single pieces is running three different unit definitions at once. Most shops run all three through one number, and that is where the stock stops reconciling.

The fix is not a new system. It is deciding, in words, what each level means and then using those words consistently in every record.

Four levels, four different things

The packaging chain has recognisable levels, and each one exists because someone at that level needs a different unit.

A piece is one item, the thing a customer holds. A retail pack is a grouping sold as one unit, sometimes two or three pieces together with a card or a band. A master carton is the case a supplier ships, containing a fixed number of retail packs or pieces. A pallet is a logistics unit above that.

Warehouse systems that generate cartonisation recommendations work in these levels, and they support separate labels for inner packs, outer cartons and pallets, generated in one operation. That is evidence that the four levels are useful and that software can carry them. It is not evidence that the industry has one agreed definition of each. There is no body that fixes what a retail pack contains or how many packs a master carton holds, and those numbers are set product by product, supplier by supplier, and sometimes by the retail channel rather than by either. A case of 72 pieces packed three to a pack is a common arrangement, not a standard one.

What is standard, in the sense that matters here, is that the levels are distinct. A piece, a pack, a carton and a pallet are four different things, and any record that treats them as one quantity will lose track of the relationships between them. That distinction is what most small shops are missing. They have a quantity of 72, and they apply it to whichever level they are thinking about at the time.

Where the arithmetic breaks

Take a case of 72 pieces, packed three to a retail pack, with 24 retail packs in the case. Then imagine the shop sells some as single pieces, some as retail packs, and some as whole cases to a small reseller.

Three real problems appear, and each of them looks like a stock error rather than a definition error.

The first is that the same physical stock is counted at different levels in different places. The shelf count is in pieces because loose ones are on the shelf. The supplier's invoice is in cases. The order record is in retail packs for some sales. Reconciling month end requires converting between three units, and every conversion is an opportunity for an error that will be blamed on the count rather than on the conversion.

The second is that a price per piece is meaningless without knowing which level it refers to. A case price divided by 72 gives one per-piece cost. A retail pack price divided by three gives a different one. Both are legitimate and they are not the same number, and a margin calculation that mixes them is wrong by whatever the packaging and handling add.

The third is the one that costs money. When a shop offers a case to a small reseller and prices it at 72 times the retail piece price, or at 24 times the retail pack price, the result is either uncompetitive or a loss. The case price has its own logic.

The lower end of that logic is your own landed cost plus whatever it costs to move the case, which is not zero even when the shop does not open it. A case still gets picked, labelled and shipped, and the reseller may still expect an invoice and a response when something is wrong. That handling cost per case, divided by the pieces in it, gives you a floor you can calculate from your own records.

The upper end is what the reseller can pay elsewhere, and this is the part that cannot be calculated from your own books. A small reseller buying one case is comparing your price against another supplier's case price, and against the retail price they could pay for the same goods if they bought smaller. If your case price is above what they can get by buying retail packs on a promotion, there is little reason for them to buy from you at all. What they can get is something you learn from them or from looking at the market, not something you derive.

So the case price sits in a range rather than at a point, and the two ends are not equally solid. The floor is yours and you can compute it. The ceiling is an estimate of someone else's options, and it moves with promotions, with the season and with what your competitor is clearing. Treat the floor as a number and the ceiling as a working assumption, and revise the assumption when you learn something new about it.

A case price is not a discount you decide on. It is a position between what the case costs you to supply and what the reseller could otherwise do.

The unit you sell is not the unit the system records

There is a specific mechanical reason this gets confusing, and it explains a lot of disputes between a shop and its own reports.

An online order for a bundled product typically records the components rather than the bundle, and derives weight from the components. The mechanism varies by platform and by app, and the detail is not what matters here. What matters is the consequence. A sale of one retail pack of three can appear in a report as three pieces, and a shop comparing that report against a shelf count of retail packs will find a factor of three and conclude that stock is wrong. The stock is right. The report is in a different unit.

So the definitions have to be written down and applied consistently in three places, which are the listing, the order record and the shelf.

Writing down the definitions

The exercise takes twenty minutes and prevents a year of confusion.

For each product, write the four levels and the conversion factors between them. One piece equals one. One retail pack equals three pieces. One master carton equals 24 retail packs, equals 72 pieces. One pallet equals however many cartons fit, which is a logistics number rather than a sales number.

Then write the price at each level, and state which level each price refers to. A retail pack price is per retail pack. A case price is per case. Neither is per piece, and where a per-piece price is useful for comparison, calculate it explicitly and label it as a comparison figure.

Then write which levels you actually sell at. A shop selling only retail packs does not need a case price on the website, and publishing one creates a unit confusion with no benefit.

The last step is the one that makes it stick. Put the conversion factors on the shelf label and on the listing, not only in a document. A person at the bench needs to know that the case holds 24 packs, and they need it where they are standing.

Buying at one level and selling at another

The margin question sits entirely in this gap, and it is worth being precise about why.

Buying at case level and selling at retail pack level adds packaging cost, a small amount of labour, and a labelling or card cost. Those are real costs and they are the reason the retail pack price is higher per piece than the case price divided by the pieces.

Selling at case level to a reseller removes those costs, because the shop does not open the case or repackage anything. That is why a case price can be lower per piece and still be profitable.

The mistake is applying the case price to a retail sale or the retail price to a case sale. Both feel generous and both are wrong, and the second is worse because it is a loss on a larger transaction.

When the pack quantity does not fit the sales pattern

There is a purchasing decision hiding in all of this, and it appears once the definitions are clear.

If the supplier ships 72 pieces to a case but a shop sells retail packs slowly, the case represents a long commitment. That is fine for a stable line and uncomfortable for a new one.

The question to ask the supplier is whether the retail pack can be bought in a smaller case. Pack quantities are often adjustable, and a smaller case at a slightly higher unit cost can be a far better decision for a new line than a large case at a good unit cost, because the large case ties up cash in stock that might not sell. It is also worth asking whether the retail pack format itself can be changed, because a pack sized to how you actually sell is cheaper to commit to than a pack you work around. Adjusting case quantities and pack formats is normally a custom and OEM service question rather than a catalogue one, and it is easier to ask before the case size is fixed.

Put the factors where the work happens

Write down what a piece, a retail pack, a master carton and a pallet each mean for your products, with the factors between them. Write down which levels you sell at and what the price is at each, and state the level every price refers to. Put the factors on the shelf label and in the listing, not only in a document.

Then check that the order record is counting in the same unit as the shelf. It often is not, and the discrepancy is usually a definition rather than an error. Most of what looks like a stock problem is two people describing the same stock in two units.

When you price a case, treat the floor as something you compute and the ceiling as something you revise, because only one of the two is in your books. Where a case price has to cover a retail pack that is packed by hand, look at retail packing options before you fix the price, since the pack format sets the conversion cost.

Tell Scarecrow Garden the retail pack configuration you intend to sell and your expected monthly volume, and discuss case and pack quantities that fit that pattern.

A pack quantity that matches your sales pattern is worth more than a slightly better unit price on a case you will not finish this season.