In this case, the concentration is not the same, we cannot directly compare the prices per liter ...kumkat wrote:an example at auchan direct but it's the same thing on the shelf:
plastic bottle to 3,14 € liter and eco recharge to 5,78 € liter !!!
an increase of 84% !!!
The bottle is given for 36 detergents while the refill is given for 21 detergents ...
The price "per wash" is therefore 34,5 cts for the bottle and 40 cts for the refill.
The scam is only 16%