[tpxl]

> Not that any supermarket I know of is currently smart enough to do that but they could

This may or may not be illegal as fuck. Picking up an item that costs 1$ and having it cost 1.2$ by the time you get to the checkout is all sorts of wrong.

[b112]

Totally illegal here. If you have a more expensive price at check-out, than marked where the product is located, it's free up to $10.

https://www.opc.gouv.qc.ca/en/consumer/good-service/goods/fo...

The Price Accuracy Policy allows customers to be compensated in case of a pricing error at the register. If the price of the article you are buying is higher at the register than what was shown on the shelf, the merchant must:

    give you the item for free if the item costs less than $10;
    sell you the item at the shelf price, minus $10, if the item costs more than $10.

So pricing could change at store close, but it'd be risky to change otherwise. And of course, it should* be a problem. You pick up a product, get to cash, and the price sneakily changes and you don't notice? Uncool.

[jpambrun]

Paper price have to be changed every week for specials even in Quebec.. it is very labour intensive and very error probe. They also often fall off. Eink price displays are meant to help that.

I used to work in a groceries store and changing price used to take so long that we had to do even while opened with shopping customers..

[b112]

One comment here, there don't need to be sales!

Sales are a marketing gimmick, to pull in shoppers via loss leaders. So all that work you described, is on purpose.

That said, the store needs to take inventory, audit things regardless, monitor when to order new product. Price changes are merely a part of that.

[mejutoco]

I wonder if some clients change the price themselves to get the item for free.

[cestith]

There's a whole slew of ways to scam retail prices. Sometimes customers used to just peel a price tag off one product and place it on another. (Store employees used to, less than 40 years ago, put a price sticker manually on every box. Then they'd key the price into the register.) Sometimes if there's a SKU sticker rather than the preprinted UPC sticker on the package from the manufacturer people will still try this.

[b112]

This is a posted price, marked by the store. They'd need to forge it, the logo, font, etc. That said, there are usually security cameras, and that would be fraud.

People shoplift too, so it is a similar type of crime.

[IanCal]

You're assuming sub-day changes. Stock doesn't necessarily come in every day and responding to demand spikes on a day by day basis solves this for any non-24h shop.

You could also do sub-day lowering of prices, although I think day by day changes adds a lot on its own if you want to have dynamic prices in response to demand.

[cardanome]

I think there are some self-checkout solutions where you scan the barcode while taking the product off the shelf instead of at the end. The price should, of course, not change between picking up and payment.

Basically, like online shopping works.

[mejutoco]

To be fair, this has always happened with a sticker price. I always check the receipt, and now and then there are some differences.

It makes it more difficult to argue it is the wrong price though! :)