A paper label costs a few cents. What costs is everything that has to happen around it. Somebody has to retype the price, print it, find the right shelf and swap the slip, and that repeats with every change.
01Half a day for every promotion
Count the items you change for one promotion and multiply by twenty seconds. That is what one promotion takes in one store. Then multiply by the number of stores and by the promotions in a year.
02The shelf and the till drift apart
A slip forgotten, two shelves mixed up, last month's price on this month's promotion. With manual swaps this happens to everyone. The customer notices the mistake at the till and the inspector on the shelf, and neither is a pleasant conversation.
03The question a paper slip cannot answer
In the application every price sent is its own line in the audit trail, with the user, the time and what went onto the label. If somebody asks six months later what the shelf said on a given day, you can look it up.
04The promotion starts itself at eight
Prepare the prices in advance and they go up by themselves at the hour you set. Nobody has to come in an hour early and walk the shop swapping slips.
05One cost instead of a monthly one
A paper slip lasts until the next price change, an electronic label lasts years. Printer, paper and the hours spent come back every month. A label is bought once.