We went shopping last night, there were a lot of weight goods. The saleswoman blindly weighed everything with +100g on the scales. I put the new product on the scales, without removing the previous one yet, so that it would be +100 unnoticeably. If it weren't for the expensive candies, where the high price for a small amount caught my eye, I wouldn't have noticed the setup. If it weren't for the night time and the desire to get home as soon as possible, I would have arranged a showdown. There were no apologies, they pretended that the scales had broken again.