3for2 rule change at hobbycraft?

Rainbowbrite

Scrapmate, you're right it would be the cheapest of the 3 items that goes through as free. However if you were to buy 6, (or more) the items would be "grouped" in threes so to speak, and you would get the cheapest within each 3 for free.

They know people will just put them through in multiple transactions otherwise, taking up a lot of time at the cash desks at the busiest time of the year, so the system automatically calculates the best deal for the customer

Sneaky of hobbycraft to change their system, I'm really bad for not checking receipts so I'd probably not even realise!