I want the product itself and not at all to say more, but for the price:
Here you buy 3x200ml by 6.75, so a liter price of 11.25
At retail stage can with 200ml comes to 3.79, ie a liter price of 18.95
This corresponds to a saving of 41%, if you can buy in advance and on stock (and wants).
Who pays more, is your own fault.
I also would like to point it, that such comparisons even with detergents, washing powders and dishwasher products, etc ... worth. Since savings are really possible!