We are 100% independent from the supermarkets featured on our site. We get prices for their products using different methods; from checking real-world stores, to checking supermarket/retailer websites. In most cases we update prices daily, however, for supermarkets/retailers that don’t sell products through their websites, we update prices 1-2 times per week, as we can’t cross-check the corresponding website every day. This means that because prices can change daily there could occasionally be differences.
For more information, please see the Shopper Policy.