Simple question….
I went to Grand Frais yesterday morning, picked a new shopping bag from the rack. I bought a few things which were in the new bag. Got to the checkout put the items on the counter, paid for the items but on my return to the car realized I hadn’t paid for the shopping bag . I think the bag costs about 90 centimes.
Would you admit your error and pay the cost of the bag on your next visit or just forget about it ?
Me, being me… next time at the store, I’d go straight to the “customer service” or a Cashier and explain… waving the (now empty) shopping bag at ‘em. 
I’d rather offer to pay (and breathe a sigh of relief) than risk being caught-out (however unlikely). 
Depending on how regular a customer, they may well waive the charge when you confess. Good service marketing! We have been gifted bags a few times for no reason since we come fully prepared with our own for a weekly shop.
I’d tell them next time.
Me too!
Me three! It’s the honest response to an honest mistake.
Moi aussi! Question de principe 
Fess up because they usually mark the bottom of bags with a pen so you can use it again without charge.
I’m shocked.
Shocked that there’s anything in Grand Frais priced below €1.
I think I’m about number 8 to say confess. No big deal. They will be amazed that you have and will always remember you. Also, it means that every time you go there you will walk round with a clear conscience. Imagine walking round every time and wondering “when I get to the checkout are they going to find I haven’t paid for the bag and shout at me in front of the whole shop?”
I think if you bought quite a bit from them they could go without the 0.90 centimes. Perhaps their fault for not noticing.
I would also confess not only as a matter of conscience but as it is such a superb shop I would be mortified if it ran into financial difficulty.
You’ll probably think I’m a ‘goody -goody’ but I would have gone back to the store with the receipt and the bag still full and explained, once I realised I hadn’t paid for the bag.
Seems the simplest thing to do especially as you were still presumably in the car park and had not left and realised much later.
If the OP just goes back and pretends he/she just bought it ( toss it on the belt with the other food) they will likely get charged properly without any discussion. They aren’t going to inspect bags going into the store.
You leave the shop with your products and later check the till receipt.
You realise that the charge of one item was 90 cents more than was marked in the shop.
Further down the till receipt another item has been undercharged by 1.80 euros so overall you have been under charged by 90 cents.
Do you flag up the error when next in the shop?
Of course if you are trying to save the planet by not taking a paper receipt no one knows if you, or rhe shop, are 90 cents worse or better off.
As for the shopping bag, paid for or not, it is an advertising tool each time it is used and charging you to advertise for them is a win win for the shop.
So, that’s a ‘no’ then?
Peter, did you put the bag on the counter to be paid with the other items?
No Tim, I left in the trolley , open and ready to fill with the produce. It only struck me in the car park when returning the trolley that I realized my mistake.
It’s good to hear you all feel like myself. GF is a great shop, literally around the corner from me so I’m a good customer and known to all the staff etc. I will pop in very soon to admit my mistake, pay my dues and get my bag marked.
Now, this leads me on to the next stage…..
A few years back, probably 30 years or so ago we were attending a wedding reception in a posh ish hotel in the UK. It was a nice ‘do’ and when we arrived I bought a round at the bar. I think a couple of drinks ie a beer and soft drink cost about four or so pounds. I gave the bar person a ten pound note to which she gave me fourteen or so pounds change. A few minutes later I realised her mistake, I looked over to the bar where it was quite busy. I weighed up the situation and didn’t bother to own up. So basically the hotel gave me a ten quid present. The said note was later spent at the same bar but am I guilty of theft ? Not in criminal terms but just from an honesty point of view ?
I still feel some kind of guilt after all this time. If it happened now I hope I would own up though I’m not 100% sure. The phrase used by customers in any shop etc is caveat emptor or buyer beware but is it also a case of seller beware ?
I think many of you would have owned up at the bar.
That is the right thing to do IMO.
I wouldn’t feel guilt about the bar situation as I’m sure over your lifetime you have been overcharged more than once and it wasn’t your error anyway.
We check our receipts before we leave the car park and a good 50% of the time there is a mistake, and very rarely in our favour. Usually just centimes, but sometimes can be up to €10 as an offer wasn’t applied correctly. We return to the shop to rectify them, even if in our favour. If every customer was overcharged 3 centimes that adds a nice bit of profit to the store.
For a 99c bag if I didn’t realise the time then I would most like forget by the time I returned to same shop.