I just did a shop for them today and had to purchase something for 1.00. I found a package of seeds (flowers) for 1.49 total 1.63 with tax. Nothing was 1.00. I have this problem at another big box store, they have to know the price of things. Nothing is 1.00. I've written and complained to no avail.
This is a pet peeve of mine, they should reimburse full amount, you won't get paid if you don't purchase. I take picture of exterior of building as well, address doesn't always show.
Live consciously....