Me too Toril I don't approve of different pricing pitches from the same company. It's bad enough that there are already price differences between the large Tesco stores and the smaller Tesco Express stores. Jack's will be a third tier.
All the big supermarkets have main stores, express stores, petrol station stores around here, you don't have to drive more than a few minutes in any direction. Then there are locally run ones, the Co-op, Lidl, Aldi etc. A touch of overkill I think.