Splitting a Bulk Buy When Nobody Wants the Same Amount
#how-to#group
Buying by the case drops the unit price, and an equal split stops working the moment people take different quantities. A worked example that divides by units taken, what to do with things that won't divide, the hidden work of collecting and storing, and why to settle before handing anything over.
A case of 24 works out at $4 each; buying singles costs $5.50. Once somebody knows that, somebody suggests going in on a case together.
Then everything stalls, because nobody wants the same number. Bulk buying is cheaper in exchange for the work of allocating quantities to people.
🥫 A case is only cheap if someone takes the rest
The first question is whether all of it actually goes somewhere.
Twenty-four split three ways is eight each. Fine if everyone wants exactly eight. In reality one person wants ten, one needs six, and one only wants to try a couple.
If somebody absorbs the remainder, the case works. Buy it without that, and the cheap case leaves you holding stock nobody uses. A lower unit price on things that go to waste is not a saving. Confirm who takes how many before the order goes in.
🧮 Work back to a unit price and multiply by units taken
When the quantities differ, don’t split evenly. Derive the unit price and multiply.
A $96 case between three people, taking 10, 8 and 6.
$96 ÷ 24 = $4 each.
| Units | Share | If bought as singles | |
|---|---|---|---|
| A | 10 | $40 | $55 |
| B | 8 | $32 | $44 |
| C | 6 | $24 | $33 |
| Total | 24 | $96 | $132 |
The shares add back exactly to the price of the case. Bought separately as singles it would have been $132, so the discount is worth $36 — and it’s worth most to whoever takes the most.
Split it evenly at $32 each and C, who takes six, effectively pays $5.33 a unit: barely better than singles, and no reason to join in at all.
To record it, split by exact amounts in Evere and enter each share directly. Choosing between the split modes is covered in equal, ratio or manual.
⚖️ Decide the unit before dividing what won’t divide
Countable things are easy. Bulk buying often isn’t countable: 5kg of rice, catering-size sauce, an industrial sack of detergent.
Decide what it gets divided into before you start. Bags of one kilo each, bottles for the detergent, whatever fits. Without a defined unit you end up dividing by eye, and somebody always thinks theirs looks short.
When a remainder won’t divide, don’t price it — carry it. Whoever took the larger share this time takes what’s left in the bottom of the sack. Adjusting on the next bulk buy is less work than generating a small transfer today.
🚚 Somebody is collecting, storing and handing it out
The overlooked cost is moving the thing.
Bulk purchases are heavy, bulky, or both. One person drives to collect it, keeps it at home, divides it up, and hands it over around other people’s schedules. None of it appears in the price.
If the same person always does it, discount their share slightly or zero it out. Pricing a contribution in kind works the same way as in upkeep on a family car or holiday home: a number lasts where gratitude doesn’t.
⏳ Slow collection means a long wait for the money
Finally, getting paid. Whoever bought the case paid for all of it up front.
If people collect a week later, two weeks later, that person is out of pocket the whole time — and it feels wrong to invoice for something you haven’t handed over yet. The result is that nothing gets settled until the last person collects.
Reverse the order. Fix the amounts when the order is confirmed and settle before anything changes hands. The goods can follow later. With the record shared, everyone can see their amount before they’ve collected anything. The logic is that of minimising the number of settlements, and bulk buys benefit from it more than most.
❓ Common questions
Q. What about delivery charges and loyalty points? Split delivery in the same proportions as the goods. For points, decide in advance whether they belong to the buyer or go towards the next order. Left vague, it looks like the person who always orders is quietly profiting.
Q. We’re left with stock near its date. Ownership transferred when the quantities were agreed, so it’s a decision for whoever holds it. Don’t let it become the buyer’s stock by default.
Q. One person hasn’t paid. Settling before handover makes this almost impossible. If the goods are already gone, clear the balance before they join the next bulk buy.
Q. Do we recalculate every time for a regular order? If the quantities repeat, fix the proportions once and record them by ratio. Then you only touch it when something changes.