A friend's mother works in Biedronka. She noticed that a couple of elderly village ladies often bought large quantities of cheap horseradish in small jars when they came into town on market day. She later saw them in the market selling jars of horseradish, without labels, for a healthy price. It was, after all, straight from their own village, organic, and hand made.
A friend of mine's father used to pull a similar trick by relabeling Tesco value whiskey as the whiskey of the clan he's the head of and then selling it to gullible Americans who thought that they were in some way Scottish.