I was doing a price check shop at a supermarket (Food basics, in Canada). There is a big list of items you have to enter the price for. Also need to enter if there is a sale on it.. Really hard shop, the app groups products by category. Unfortunately, the shop doesn't stock and group products in the same way. I usually end up going to the shop twice on the same day to complete about 100+ items. An employee asked me why I was roaming around for so long (didn't have a basket/cart so they were right to be suspicious). I said I was looking for some-name (product not found in their store) and had to abandon the shop.