One fixed monthly rate for a household's list

A household wants one number for its whole monthly list. That is good trade, and it is safe only if you cost the list at your own current buying rate, fix the quantities as well as the total, name how long the figure holds, and quote the two or three items whose rate swings separately.

The folded list on the counter

Eleven in the morning. Naseem walks in with a paper folded into four and puts it on the counter beside the scale. Twenty kilos of flour. Five litres of cooking oil. Sugar, tea, rice, lentils, soap, salt, spices. Eighteen lines, more or less the same eighteen every round.

Then he asks the question. "Just give me one figure for the whole list. Tell me what it costs and I will pay that. I do not want a different total every time I come."

He is not trying to trick you. He is trying to budget. His income arrives on a fixed day in a fixed amount, and a grocery bill that swings by Rs 900 is a problem in his house.

Most shopkeepers answer in three seconds, in the head, with other customers waiting. That answer is where a good arrangement turns into a slow loss.

Why this is a customer worth keeping

Be clear first that the arrangement itself is a good one. A standing whole-list household is close to the best trade a small shop gets. You know what he will take, roughly when, and what it is worth. No bargaining, no picking an item up and putting it back, no half-sale. Eighteen lines leave the shelf in one movement.

It also stops him splitting his basket between you and the next shop, which is what quietly drains a small counter. Your own buying quantity on those lines stays bigger and steadier.

If you have ever weighed up one big regular buyer against twenty small ones, this is the grocery-counter version of the same question, and here the answer is usually yes. The aim is not to refuse. The aim is to say yes in a way that is still true thirty days later.

What you are really agreeing to

Now the danger, plainly, because everything else follows from it.

When you name one figure and hold it for a period, you have taken on the risk that your own buying rate rises inside that period. Not on one item. On eighteen or twenty at once. Nobody paid you for taking it. You moved it off his shoulder onto yours without noticing, because every rate you knew when you quoted was that day's rate.

Most of the eighteen lines will not move much. Salt is salt. But cooking oil moves, pulses move, sugar moves, and flour moves when the season turns. A fixed figure does not hurt you because one item doubles. It hurts because two or three climb a little each while your total stands perfectly still.

Say you fixed one figure for an eighteen-item household list

The whole list, costed at your buying rate the day you quotedRs 12,400

What the shop must earn on itRs 1,600

The figure you quoted him, roundedRs 14,000

Then cooking oil went up Rs 70 a litre, and he takes five litresRs 350 more

And lentils went up Rs 40 a kilo, and he takes four kilosRs 160 more

And the flour bag went up Rs 90Rs 90 more

The same list now costs youRs 13,000

Left on the same Rs 14,000, and he still calls it the fixed rateRs 1,000

An example, not a real shop. Put your own list and your own buying rates in and the shape stays the same.

Read that figure twice. Those rises are small and ordinary, the sort you would not comment on when the supplier's bill lands, and they take well over a third of the earning out. The shopkeeper never notices, because he is still collecting the same round number.

Cost the list before you name the figure

The figure has to be built on paper, once. Not at the counter, and never out of memory.

Two mistakes get made here. The first is quoting off your selling rates: you add up what you would have charged, knock something off for size, and call that the figure. That says nothing about whether it earns, because those selling rates were set against buying rates that have moved since.

The second is quoting out of memory. You remember the oil at one rate because that rate has been in your head a while, and the last two cartons came in above it. On one sale that gap is nothing. On five litres a round for a year, it is a wage.

Costing the list, in the order that keeps you honest

1. 1Write the list with a quantity on every lineNot "oil" but "five litres of oil". A line without a quantity cannot be costed, and cannot be argued about later either.
2. 2Put your latest buying rate against each lineThe rate on your most recent purchase bill for that item. Never the shelf rate, and never the rate that has been sitting in your head.
3. 3Add the lines up and look at the numberThis is what the list costs you. It is the only honest place a quoted figure can start from.
4. 4Add what the shop earns on these goods anywayThe margin you already take on flour and oil and tea. Not a fatter one because the figure is fixed.
5. 5Round it, then say what it does not coverRound to a number he can hold in his head, then name the two or three items that go at the day's rate instead.

Look at what the second step does. Costing the list from your most recent purchase bill, not an older rate and not the rate you wish you were paying, is the difference between an arrangement that earns and one that only looks like it earns. If you have never set prices off your real buying rate, this list is a good place to start.

The three things that make a fixed figure safe

None of them is a bigger margin. Padding is what a shopkeeper does instead of thinking, and it fails twice: it makes him expensive enough that the household checks his total elsewhere, and it still does not save him if oil climbs.

Fix the quantities, not only the total. "One figure for my list" is an open cheque as long as nobody has written down what the list is. Twenty kilos of flour becomes twenty-five when a relative moves in, and the tea goes from two kilos to three. You are handing over more goods for the same money and cannot say when it started, because there was never a written line to check against. The agreed figure belongs to an agreed list with agreed quantities; anything past it is an ordinary sale.

Fix how long it holds, and say so at the start. This is the one shopkeepers skip, and the one that saves the relationship. Say at the beginning, "this figure stands for three rounds and then we read it again", and revising becomes an event you both expected. Say nothing, and the day you raise it you are the shopkeeper who suddenly wants more and he is the customer being squeezed.

Name the two or three items that genuinely swing. Every bazaar has them: cooking oil and pulses in one, sugar and a particular tea in the next. Say them out loud when you agree the figure. "Everything here is fixed except the oil and the lentils. Those two go at the day's rate." A household that heard that once will not argue later, because it was part of the deal rather than a change to it.

Six things on paper before you name a figure

• The exact list, with a quantity written beside every line
• Your latest buying rate for each line, taken off a bill
• The date the figure was agreed, written where you can find it
• How many rounds it holds before the two of you read it again
• The two or three items that go at the day's rate instead
• What happens to anything the household takes beyond the list

Where the shop's profit actually comes from

Here is the honest case for the whole idea, and it has nothing to do with charging more. You know what this household will take before it takes it. That is rare in a shop, and it is worth money at the buying end, not the selling end.

Put four households on standing lists and you know a full round ahead how much flour, oil, sugar and rice you need before one of them walks in. That can be ordered in one go instead of five small top-ups, from the supplier who gives the better rate on that size, on a day you pick rather than the day the shelf ran empty.

The gap between the small-lot rate and the full-carton rate is your earning here, and it is a real saving made out of information the customer handed over for free. It also makes the buy in bulk or little and often question easier than usual. He gets a number he can plan around; you get a quantity you can buy properly.

Changing the figure without an argument

Four in the afternoon. Rafiq's list is packed and standing by the door, and he has come for it. You have to tell him the total is going up for the first time since you agreed it. If you kept the costing sheet, this takes ninety seconds.

Show him only the lines that moved. "The oil was Rs 620 a litre when we agreed this. My last bill was Rs 690. You take five litres, so the list costs me Rs 350 more. The new figure is Rs 14,400." That works because it names the item, so he can check it anywhere in the bazaar, and it shows him your cost moved rather than your appetite.

Two more rules. Never revise two things together: a rate change and a quantity change in one breath feels like being worked on. And revise downward, out loud, when a rate falls. The shopkeeper who says "the oil came down, so your figure comes down by Rs 200" buys more trust in one sentence than a year of polite service.

When to say no

Some households should not be on a fixed figure at all, and it is kinder to say so at the start than to unwind it later in bad temper.

The list is not stable. If what he takes swings by a third from one round to the next, there is no list to attach a figure to. Serve him normally and hand him a written total.

He wants the fixed figure and free additions. Listen for "and just put the odd small thing on it as well". That is the arrangement dying at birth. The figure covers the list; additions are sales.

The payment record is not clean. Be cold here. If he already carries a balance he does not clear, a standing list makes it bigger and more regular, not better.

Three people in the house buy on one name. If the wife, the son and the father all send someone with a note, settle first whether you are running one khata for the house or one per person. A fixed figure on top of a confused account is two problems stacked.

Paying for it, and writing it down

There are three ways the money can come and they are not equal.

Up front, before the goods go. Best for you, uncommon, and worth giving something small for, because it turns the arrangement into cash trade.

In two parts. Half on delivery and half partway through. This works in most shops, because it keeps the amount at risk down to what you would have extended anyway, and it suits shops that already collect in the middle rather than wait for the end.

All of it at the end. A fixed figure collected at the end of the period is a full round of udhaar, the credit you give, to one household, in a single lump, on a fixed day. Size it the way you would size any credit limit, with the same judgement you would use on how much udhaar to give. If it is more than you would want sitting on his page as an ordinary balance, do not refuse the arrangement. Split the payment.

Whichever way the money comes, the arrangement lives or dies on the record. Keep four things: the list with its quantities, the agreed figure, the date it was agreed and how long it holds, and what actually went out each round. Without the fourth you cannot answer the complaint every long arrangement produces, which is "the tea was short last time". Without the first three you cannot raise the figure without it sounding like an opinion.

This is where a khata that lives on your phone earns its place. In Wasoolo the household's list goes on the entry itself as line items with quantity and rate, so what went out is on the record instead of in your head, with the payments on the same customer page.

What keeps a fixed figure fair, and what turns it into a slow loss

✓Keeps it fair

• The list and its quantities written down and agreed
• A period named out loud on the day you agree the figure
• The two or three swinging items quoted at the day's rate
• The figure cut when a rate falls, before he asks

✕Turns it into a loss

• One number agreed for a list nobody has written down
• A fatter margin used in place of a period
• Small additions absorbed round after round to keep the peace
• The costing sheet thrown away once the figure is set

Notebook or app, keep it. An arrangement you cannot show a month later is an argument with a date on it.

Should I charge a little extra because the whole list is fixed?

No, and it usually backfires. A padded figure gets checked against another shop and lost, and it still will not cover you if oil climbs. Use fixed quantities, a stated period and day-rate items.

How long should the figure hold before we look at it again?

Three rounds suits most grocery lists: long enough for him to plan, short enough that a rise does not sit on you for half a year.

What if he adds two or three items every round?

Those are normal sales at your normal rate, written on his page like any other purchase. Say so once, at the start. Absorbing them quietly is how the arrangement stops earning.

He compares my figure with a big store's advertised rate. What do I say?

Ask him to price the same eighteen lines in the same quantities, then compare. Add what he gets from you that the store does not: delivery, a running khata, and someone who knows the list.

Can I fix a figure for a household that pays at the end of the period?

Yes, if the record is clean and the figure sits inside the credit limit you would have given anyway. If it is bigger, split the payment in two.

What do I do when a rate falls after the figure is set?

Tell him, and cut the figure. You lose nothing, and you gain a household that believes your numbers the next time they go up.