The founder of the largest store chain Woolworth and the inventor of food prices and supermarkets found a true insight that allowed him to raise millions. A shy and upset young man from the village at the age of 21 was arranged as an assistant seller in a small store. At the time, the price of the goods in the shops placed on the shelf behind the seller was not indicated. The seller "on the eye" determined the buyer's solvency and named his price. Then the buyer either traded or left. The poor Frank did not know at all and was very afraid to invite buyers, praise the goods, and trade. He was so scared that one day he even fainted right during work. As a penalty, the store owner left him trading alone for the whole day, threatening that if revenue was less than the usual daily, he would fired him.

Before opening the store, Frank attached to all the goods a paper with the lowest possible price (a prototype of the modern pricer). He placed all the goods deposited in the warehouse on a huge table, attaching a sign with the inscription "All five cents." He placed the table near the window so that the goods and the sign could be seen from the street. And trembling of fear, he began to wait for buyers, hiding behind the counter.

All the goods were sold out in a few hours, and the revenue per day was equal to a week. Buyers, holding the goods in their hands and seeing the price written on it, gave money without trading.

Frank left the owner, borrowed money and opened his shop. In 1919, Woolworth's empire consisted of a thousand stores, and Frank's personal fortune was approximately 65 million.