Just this morning, I scooted out to grab me some stuff from the local mini-mart. This defied the wisdom of not shopping at convenience stores (since the prices are higher) but when emergencies strike, you just have to deal.
As the clerk was scanning the items, I noticed that a pack of instant coffee was around a dollar higher. I halted the clerk and checked the item before it got bagged and saw that what was registered in the scanner was really a buck higher than the tag.
I immediately had them correct the pricing insisting that they only charge me what’s on the price tag. Apparently, their system had some sort of glitch in the data and the coffee was accidentally priced a buck higher.
Lesson from the incident: Always watch the price scanner. There are some instances when clerks accidentally scan items twice which means you get charged twice as well.

