Callum,
I feel I ought to stick up for Tesco here, not because im an employee but becaue they may have every right to sell them at that price.
I cant help but think the larger chains and stores selling items pay more to the manufacturers than the local independants and smalls for the product.
Go figure, Tesco - Millions of shoppers everyday, folk who just shove it in their trolley regardless cos they want stuff. More customers so more chance of them buying a product, Manufacturer takes advantage of this and battles it out on a cost price between them and the big 5 stores, R&B charge say £5 a box.
Guaranteed to sell it- most folk I know wont go into town for a box of dishwasher tablets. Even the other things Savers sell, dont usually warrant a special trip to most people despite the price. Its hassle, car parking fees etc etc.
Coop, or local independant or this case Semi Chem ( Savers in Britain), Manufacturers know they wont get the footfall for certain products in the quantity the Big 5 sell in but still a sale is a sale, therefore Mr Independant/Small chain gets a good price of £2.50 and is able to sell them for £5 a box.
Both companies get £2.50 a box profit but actually the manufacturer has ripped the consumer off.
I think this happens more than one might think,