Electronic vs paper shelf-edge labels: what each price change costs

On reasonable assumptions, changing a price with a paper shelf-edge label costs about 55 to 60 pence in labour; with an electronic label, around 7 pence. The gap of roughly 51 pence only matters multiplied by your store’s changes, and the costliest step, walking to the shelf, varies most from store to store.

This article does not compare technologies. It breaks a price change into steps, puts a time and a cost on each, and shows you how to time them in your own store so you do not have to rely on mine. The timings below are illustrative: we found no independent study that measures them, and we say so below with the sources.

What has been published on the time a change takes

Very little, and almost all of it from people who sell labels or have bought them. Worth knowing before you trust any number.

• Maurer’s Market, an independent US grocer using SES-imagotag labels (now Vusion), says in a July 2023 IGA article that it made 1,400 price changes on a Monday in under ten minutes, work that would previously have taken four days. The same piece quotes the vendor: staff spend 80% less time updating paper labels.
• Supermarket News reported in January 2010 that the owner of a 10,000 sq ft (929 square metre) store put the time spent printing and hanging labels at 20 to 24 hours a week. It is her own estimate, fifteen years old and from another country.
• Pricer, a manufacturer, cites its own study in an October 2024 article: retailers that implemented electronic shelf labels saw a 20% reduction in in-store labour costs. It gives no sample, baseline or period.

None of these answers the question that matters: how many seconds each step takes in a store like yours. You have to measure it.

The five steps of a paper change

A paper price change is not one action but five. The times in the table are a starting assumption for a grocery store with single changes spread through the day. Replace them with yours.

Step	What it covers	Illustrative time
1. Print	Pull the change list, send it to the printer, collect the sheet	15 s
2. Cut and sort	Separate the labels, group them by aisle	15 s
3. Walk and locate	Go to the bay, find that product’s slot among similar ones	40 s
4. Remove and fit	Take off the old label, fit the new one in the rail	25 s
5. Check	Confirm what is on the shelf matches the system	15 s
Total		110 s (1.83 min)

Two caveats. First, step 3 is shared when changes are batched: in promotion week one colleague walks an aisle once and changes forty labels, so the walk per change collapses. Maurer’s 1,400 Monday changes, if the account is accurate, point that way. That is why a single average misleads; time at least two situations, the one-off change and the promotional wave.

Second, rework. A mis-fitted label, the wrong face, or a price printed before it was corrected in the system forces the cycle to be repeated. As an illustrative assumption we use 5% of changes being redone in full.

And the steps of an electronic label

The system does steps 1 to 4: the price is changed at the data source and the platform pushes it to the label. What remains is what cannot be automated.

Step	What it covers	Illustrative time
Spot check	Look at a sample of labels after the change	12 s per change, spread out
Exceptions	Labels that do not respond; assumed 1% of changes, 3 min each	1.8 s per change
Total		about 14 s (0.23 min)

The savings calculator uses 0.2 minutes for this item; here we add exceptions separately, which is what a real project ends up costing. If your supplier gives you no update-failure rate, ask for one: it matters as much as the price of the label.

What a minute costs

The hourly cost must be the employer’s, not the pay rate: wages, employer National Insurance, pension contributions and holiday. As a floor, the statutory National Living Wage is 12.71 pounds an hour from April 2026 for workers aged 21 and over (GOV.UK). We use an illustrative 18 pounds an hour fully loaded, the same figure as our savings calculator; we found no published retail-specific figure to cite, so check it against your own payroll.

At 18 pounds an hour, a minute costs 0.30 pounds.

Item	Calculation	Per change
Paper, base time	1.83 min x 0.30	0.55
Paper, rework	5% of 0.55	0.03
Paper, total		0.58
ESL, spot check	0.2 min x 0.30	0.06
ESL, exceptions	1% x 3 min x 0.30	0.01
ESL, total		0.07
Difference		0.51

All amounts in pounds. We have not counted paper and ink, which are pennies per label and depend on your printer, nor the opportunity cost of what the colleague is not doing while walking.

From unit cost to a year

The cost of one change means nothing until it is multiplied. Three imaginary stores with the same 51 pence difference:

Changes per week	Hours freed per week	Annual time saved
100	2.8	2,652
400	11.3	10,608
1,000	28.2	26,520

To see whether 10,608 pounds pays for anything, set it against the project cost. We take the worked example in the calculator: 59,300 up front and 1,950 a year in software and replacement, over a five-year horizon, read across at face value as pounds (the original example is in euros; replace both with your quote). Spread out, that is 11,860 + 1,950 = 13,810 a year. Divided by 0.51, it gives about 27,100 changes a year, around 520 a week.

Reading: below roughly 520 changes a week, the time saved alone does not cover the project in that example. Above it, it does, with a margin that grows slowly. The other arguments come in here, errors between shelf and till and the was/now and reference-price rules that make every paper promotion costlier; but that is a different calculation, and this page sticks to time.

Why a saved hour is not an hour on the bottom line

The table above turns minutes into money by simple multiplication, and that multiplication is the debatable part. Freed time is only money if one of two things happens: paid hours are cut, or the time goes into replenishing, serving or selling more. A common criticism of published cases is exactly that: hours are announced and the payroll stays the same.

In a store with 28 hours a week freed, the decision is obvious, because that is almost a full-time post. In one with 3 hours, the saving is real but scattered across quarter-hours nobody can cut. Before accepting a time-based return, write down what will happen to those hours.

How to measure it in your store: six steps

1. Count the changes. Pull the last eight weeks of history from your pricing system, separating one-off changes from promotional waves. It is the multiplier, and you will have it in a file.
2. Define the steps. Use the five above or your own. If your labels are cut in the same print run, merge steps 1 and 2.
3. Time a sample. Thirty one-off changes and two full promotional waves, noting the time of each step separately. Do not tell the person doing it which step interests you most.
4. Repeat on another day with another person. Times for someone who knows the aisle are very different from those of a new starter. Use the median, not the mean, so one odd change does not skew it.
5. Count the redos. An audit of a hundred shelf labels against the system gives you the redo rate. It also tells you how many differences there are, which ties into the problem of a till price that differs from the shelf price.
6. Multiply by your own cost per hour, not a national figure, and write the result down with the date of the measurements.

Sample size, a logging template and what to leave out of the count are covered in the guide to measuring labour hours saved; for this comparison, timing each step is enough.

It is a morning’s work for two people. If you then run a pilot project, repeat the same timing with the labels installed: you will have a before and after measured by the same method, which is the only thing that can really be compared.

What to expect from this comparison

The honest comparison is this: paper costs more per change, and the project pays only when there are enough changes to amortise it. In some stores it works out and in others it does not, and the figure that decides it, weekly changes, is the one least mentioned in quotes.

For the other cost items, the full breakdown is in the pricing guide, and you can try your own numbers in the total cost calculator.