So, at the store I picked up a Tillandsia aeranthos (http://www.pbase.com/plbh/image/38598308), marked $6.97, and a stick of wood to place said Tillandsia upon. I was a bit preoccupied thinking about something when the checkout lady knocked my new Dendrobium over, which caused me to be preoccupied with removing the flower spike from the cart without knocking all the buds off (why do they sell them with spikes and not just with pictures of the flowers it will have?). Anyhow, while I was up to this, she scanned the rest of the items as I was watching out of the corner of my eye. I could have swore she missed the Tillandsia, and I told her that, but she insisted that she scanned it. Well, I have returned home to find no charge on the receipt for $6.97, and there are only 8 entries, not 9 for the number of items I bought.
The store is quite a drive (time consuming), gas is expensive (in two trips I will pay for the item in gas), and she insisted that she scanned it.
What should I do?