Machakos shoppers had been paying high prices set by duka owners who faced no competition. 

In 2004, David Kimani, co-founder of Naivas, opened a branch in Machakos town. He priced the sugar below the duka on the corner, and waited. The first customers came that week out of curiosity, and they came back again because the price was the same. 

David had watched the mechanism at work in his uncle Joram Kamau's shop in Rongai in the 1980s. Joram bought near-expiry goods on credit from Nakumatt and sold them at a discount. Customers came because the discounts and returned because of consistency in stocking and pricing. 

When David and his brother Simon Gashwe opened their first shop in 1990, they operated on the same principle: price against the local trader, stock reliably, and trust the customer to register the difference. The customer who finds sugar cheaper at a new shop does not announce a decision. They return the following week, buy the same bag, and register the price in their head. By the fourth visit, the new store is now their default store.

The price advantage survived in Rongai, and in the second branch at Elburgon, and at the third branch at Naivasha, but collapsed in Nairobi in 2001. Nakumatt and Uchumi had supply chains deep enough to absorb the cost of competitive pricing. David and Simon, buying through middlemen who added margin at every transfer, could not match them. But the Nairobi failure was a lesson that price advantage held only where the competition was informal traders, not established chains. Machakos in 2004 was the first application of that insight. Embu, Eldoret, and Kitui followed. Between 2004 and 2009, Naivas opened ten stores in towns where the alternative was a trader with a scale and no fixed price board.

Each opening generated its own loyal customer base. 

Then the market handed Naivas something beyond towns to settle in. Between 2017 and 2021, Nakumatt, Tuskys, and Uchumi collapsed within four years of each other. Nakumatt closed all its Kenya branches under Ksh 41.2 billion in supplier debt. Tuskys, which the children had inherited and fought over until it was empty, shut branch after branch. Uchumi contracted to two stores under court-supervised restructuring. The customers who had used these chains for years were stranded, but not for long as Naivas swooped in with even better pricing. They were sold.

By this point, three and a half million people held NaivasCards.

The card appeared to be a loyalty program. What it was, structurally, was a switching cost presented as a reward. A customer who registered, spent Ksh 5,000 a week, and earned 50 points was accumulating a balance that did not exist at Quickmart or Carrefour. 

Each visit added to a profile Naivas was building in the background. The company tracked which branches she visited, on which days, for which products, and in what volumes. The buying team read that data to decide how much Harpic to stock in Githurai and how much Omo to move to the front shelving in Kisumu during back-to-school months. The customer produced the intelligence and store used it to become more accurate to their specific purchasing pattern. The more accurate it became, the more frequently people returned.

The Foodmarket format, introduced in 2016 at the Kiambu Road outlet, added a physical structure to the return. Fresh food occupied the first zone at the store entrance: bakery goods from a central production facility, vegetables from smallholder farmers, fresh cuts from the butchery. A customer who walked in for eggs left with eggs, a bundle of tomatoes, a half-loaf from the bakery, and a 500-gram packet of rice placed on promotion near the checkout. The store had engineered the route to increase the basket before the original list was complete.

The private-label range converted the price promise from something the customer was told to something she confirmed herself. Naivas-branded sugar, tissue, rice, flour, and tea were priced two to three percent below competing branded equivalents. A customer who chose Naivas-branded sugar over Mumias held the evidence in her hand. She did not need an advertisement. The following week, the private-label bag was the first thing she reached for. The brand had moved from the sign above the entrance to the shelf she chose without deliberation.

The Lipa Pole Pole installment program extended the relationship further. A customer who could not afford a Ksh 45,000 refrigerator in a single visit left with it and paid over six months. The retail price was the same. But a customer with a monthly installment due to Naivas was not browsing for alternatives. She was in a structured payment relationship with a store that held her balance.

At the end of all this, 285,000 people walked into a Naivas branch and bought something on any given day in 2024, generating Ksh 114.45 billion in annual revenue across 114 stores in 38 counties. Naivas now holds 53 percent of Kenya's formal supermarket market share.

This story first appeared on episode two of Kenyan Founders, The History and Business Strategy of Naivas Supermarket.