Explore S Group's Prisma Tukku concept, bringing bulk buying into its stores with a flexible format that blends traditional retail and wholesale shopping.
At a Glance
As shoppers seek greater value and flexibility, Prisma Tukku shows how retailers can capture bulk-buying missions traditionally reserved for wholesale through an accessible, registration-free format. Finland's largest retail cooperative, S Group, is piloting a new store-in-store concept that sits between traditional grocery retail and wholesale cash-and-carry.
A new store-in-store concept
Called Prisma Tukku (“Prisma Wholesale”), the format incorporates dedicated bulk-buying zones within existing Prisma hypermarkets, offering larger pack sizes and multipacks without the trade accounts, membership fees or minimum order requirements typically associated with wholesale.
The concept first launched in August 2026 at Prisma Kaleva in Tampere, as part of a wider refurbishment programme. It has since expanded to Prisma Limingantulli in Oulu and Prisma Kaari in Helsinki, giving S Group a spread of pilot locations across different catchments and shopper demographics. All Prisma Tukku products can also be ordered online through S-kaupat.fi and collected from the store.
A small range built for value, convenience and flexibility
Each store carries around 200 wholesale-oriented SKUs across grocery, foodservice and household categories.
The assortment focuses heavily on larger pack sizes, including flour sacks of up to 20 kg, five-kilogram bags of rice and pasta, multipacks, catering ingredients and disposables. Best-selling products in the initial weeks reportedly include burger patties, halloumi blocks, disposable gloves and large-format cooking oils.
One trip, several reasons to shop
By offering wholesale-style formats within a regular hypermarket, shoppers at Prisma Tukku can access better value per unit without making a separate trip to a trade wholesaler or committing to a membership scheme. Larger packs give customers greater choice over how much they buy, while helping households manage budgets more effectively, thereby reducing the need for frequent replenishment trips.
The concept might be even more beneficial for small business owners, who often find retail packs too small for their needs, while wholesale purchases entail administrative hurdles such as account registration and minimum orders. Prisma Tukku bridges this gap by providing practical bulk formats that can be purchased alongside everyday shopping, during normal store opening hours and without any trade credentials.
The format also benefits from being embedded within an existing Prisma store. Customers can combine grocery shopping and bulk-buy needs in a single visit, creating a genuine one-stop-shop experience, while online ordering and click-and-collect strengthens the convenience premise further. Bundling value, flexibility and convenience into one visit gives Prisma Tukku its edge over a standalone cash-and-carry.
Finland's practical approach to keeping everyday essentials at home creates a natural connection to preparedness, but this is a secondary benefit rather than the concept's core rationale.
What makes Prisma Tukku particularly relevant today is its ability to address several customer needs at once. Customers are looking for ways to manage household budgets, save time and simplify shopping. In addition, the 24/7 opening hours at Prisma Kaleva and Prisma Kaari provide further flexibility, allowing customers to combine bulk purchases with their regular shopping whenever it best suits their schedules.
— Mika Lyytikäinen, Vice President, S Group Food and Consumer Goods
Looking ahead
Prisma Tukku demonstrates the potential for retailers to serve traditionally separate retail and wholesale missions through one accessible format. By removing registration requirements and offering greater flexibility in pack sizes, the concept responds to the practical needs of larger households, food enthusiasts, as well as people buying for events and small businesses. The concept has the potential to be adapted for markets beyond Finland, particularly where consumers are seeking better value, greater convenience and more flexibility on how much they can buy.
What can we learn from S Group's new proposition?
Align with behaviours customers already exhibit but are underserved
The concept was built around existing shopping missions. S Group identified how shoppers and small business owners flexed between various pack formats and occasions during a single shopping trip and developed a proposition around those needs.
Rethink pack-size architecture
The format’s initial success suggests there may be significant white space between standard retail packs and full wholesale cases. Suppliers should consider how mid-sized bulk formats could serve multiple shopper missions, spanning value, convenience and flexibility, with preparedness as a useful secondary benefit.
Removing friction creates new demand
One of the clearest differentiators is the absence of memberships, trade cards or account requirements. Sometimes the biggest innovation is making a proposition easier to access rather than creating something from scratch.