The complete saying is great
minds think alike (ifml.) and is used humorously to say that two people must be very clever because they have had the same idea.
...and all that (ifml.) can be used to complete well-known sayings. Marika uses the “going to” construction when asking How much is it
going to be? She hasn’t paid yet. Ticket prices change constantly, and she knows Ellie can tell her the price. In the UK, a card that allows somebody to travel by train at a reduced price is called a railcard. Hang on a minute (ifml.) is used to ask people to wait or to stop what they are doing for a short time.