Piggly Wiggly invents self-service grocery: shoppers pick, prices sell

In 1916 a grocery shopper handed a list to a clerk, who weighed dry goods from barrels and assembled the order. The small army of clerks every store needed was the trade's biggest cost, and part of it landed on every price tag.

Shoppers take a basket through a one-way turnstile maze of 605 packaged, price-marked items to a cashier — no clerk picks your order; the packages do the selling.

Saunders built the store as a one-way maze: turnstile in, four aisles, cashier at the exit. Goods came pre-packaged with every price marked, staff wore uniforms and politely refused to pick items for visitors, and impulse goods sat by the checkout. Opening day he staged a beauty contest, a brass band and five and ten dollar gold coins for the women.

Nine Piggly Wigglys traded around Memphis by the end of the first year. Saunders patented the layout and franchised it to hundreds of grocers, and in the 1920s and 1930s the whole industry rebuilt itself around self-service. Food marketers trace modern product branding to that moment: packaging now had to tempt a shopper no clerk was guiding.

Every grocery before 1916 ran on clerks. You handed over a list and waited while a staff member walked the aisles, weighed flour and sugar from barrels and packed your order. Chain stores cut prices through volume, but the 'small army of clerks' needed to fill orders stayed expensive, and at least part of that cost was passed on to the shopper. Clarence Saunders, a Memphis wholesale grocer, decided the clerk was the thing to delete.

The first Piggly Wiggly opened at 79 Jefferson Avenue, Memphis, in September 1916. Shoppers entered through a turnstile with a wooden basket and walked four aisles of 605 items, all sold in packages with prices marked on each one, before reaching a cashier at the far end. Stockers on the floor would not select merchandise for visitors. Saunders turned the opening into a carnival — a newspaper-advertised beauty contest, flowers and balloons for children, gold coins for the women, a brass band in the lobby — because a store where customers did the work had to give them a reason to feel welcome.

The idea compounded fast. Nine stores were trading around Memphis within a year; Saunders patented the self-serving store in 1917 and franchised the format to hundreds of independent grocers. Impulse buying became an engineered feature — candy by the checkout — and the professor of food marketing John Stanton calls the format 'the origin of branding', because packaged goods now had to sell themselves to an unguided shopper. Independent and chain stores across America converted to self-service through the 1920s and 1930s, and the template scaled into the modern supermarket.

Clerk labor was grocery's largest cost; moving the picking step to the customer deleted it and let prices drop.

Pre-packaged, price-marked goods ended per-order haggling and made volume purchasing and uniform pricing possible.

The one-way turnstile maze maximized each shopper's exposure to goods — impulse buying was designed in, not discovered.

Saunders patented the layout and franchised it, selling the format itself rather than only groceries.

When a channel's cost lives in a service step, redesign the flow so customers serve themselves — and every product becomes its own salesman at the shelf.

Saunders franchised the chain and sold public stock. In 1922 he tried to corner his own heavily shorted shares, driving the price from 40 past 120; the Stock Exchange ruled a corner existed and pulled the stock, and Saunders handed his bankers a fortune estimated at nine million dollars and lost the company. His later inventions — a 400-store namesake chain, the automated Keedoozle — never caught on, but his format did: self-service became the template for King Kullen, Safeway and Kroger, and Piggly Wiggly still fronts 500-plus stores today.