I personally find Shop-rite to be the worst by far. On a large average weekly shopping trip, at least $30+ monthly in errors.
(and I always watch the screen by checkout)
Examples:
Soda 4-$12 Max 4 per flavor- Cashier inputs all of the same flavor so don't get discount.
Grape Juice- $2.99 (doesn't say exclusions) Shelf has "tag" sale price by all flavors. Sure enough scans the low carb at 2 times the price of a regular non sale grape juice
Cereals: End of Aisle, large display, only for then to stock the entire display with the wrong OZ amount
Tags frequently have the wrong sale week prices on them.
The biggest problem is that discount doesn't credit until after rings up totals so can't tell if priced right.
Then Who is going to shlep back to the store with a few 12pk soda and wait on line in from of this not interested teenager for 30 min by customer service.