[nck4222]

I don't think it's a lot to ask that I'm informed how much I'm going to be charged before I pay for something, which is the process for every sale I make currently works.

What if the item is marked as on sale but the database hasn't been updated so I don't get the sale price?

What if the price on the item is correct but someone fat fingered the price in the database?

What if a different customer moved an item from one shelf to another so the price on the shelf is for a different product?

What if I want to know the total with tax?

What if a camera sees me pick up a $500 item to look at but doesn't see me put it back on the shelf?

I don't want to go home, wait an hour+, see I've been mischarged, and then have to spend a week waiting for a refund to process.

[spunker540]

I bet people said the same thing about credit cards — “how do I know there won’t be an error that causes my credit card bill to be wrong at the end of the month? I’ll stick with cash thank you very much”

[nck4222]

I mean, until the technology had been proven, I think that's a valid question to ask.

Plus, when credit cards were introduced, you were still given the opportunity to agree upon the total on which you'd be charged, before you were charged. That's all I'm asking for with this.

[RandallBrown]

I have to imagine that all of those will be rare enough situations that you don't really need to worry about it.

Many of them happen when you're checking out in person too. You can simply go to the receipt kiosk every time if you're worried about being charged incorrectly.