Hi all, We have recently designed eliquidparadise.co.uk; and have created multiple product categories. Using attributes and variables, we have managed to set up "3 for 1" pricing on individual products, for example here; https://eliquidparadise.co.uk/product/american-lites/ However, we wish for people to be able to add multiple items to their basket, and for a "3 for 1" deal to work in their basket if they purchase different products and/or different categories. Example; 3 Different Flavours OR 2 items from Prestige category, and 1 item from Vjuice category. Both the above examples we would like to qualify for "3 for 1" at fixed, discounted pricing. Please advise, all responses are greatly appreciated.