> how much effort does it take to look at your receipt and look for errors [compared to your memory of the exact prices of everything you just bought]
> I have watched countless people shop with a calculator or pen/pad to make sure they stay on budget. It is not hard.
Yes, this is exactly what I am talking about. Both of those things are straightforwardly doing extra work using your own time and resources. I generally spot check my receipts and do a rough mental tally, but if I had to turn that paranoia to max because some store was continually trying to defraud me, then I would likely stop going there.
If a store refused to adjust a fraudulent charge or honor an offered price, then I would keep escalating the issue and not back down. This too requires resources of having the time to argue, reading as someone who will not simply be browbeaten, plus deescalation and being able to communicate clearly if they call the police, etc.
> I have watched countless people shop with a calculator or pen/pad to make sure they stay on budget. It is not hard.
Yes, this is exactly what I am talking about. Both of those things are straightforwardly doing extra work using your own time and resources. I generally spot check my receipts and do a rough mental tally, but if I had to turn that paranoia to max because some store was continually trying to defraud me, then I would likely stop going there.
If a store refused to adjust a fraudulent charge or honor an offered price, then I would keep escalating the issue and not back down. This too requires resources of having the time to argue, reading as someone who will not simply be browbeaten, plus deescalation and being able to communicate clearly if they call the police, etc.