You can display the newspaper price on the dateline, using the same methods as for any other text or number. The problem may appear with prices that vary in different days of week, e.g. you have two different prices for our newspaper, one for Saturday, one for all other days.

Solution is to create a text frame on a suitable master page, and insert tag:

Price >writei EWeekDay, " 1.40 1.40 1.40 1.40 1.40 1.60 1.40"< . 

How it works? The EWeekDay returns the day of the week of edition's date, from 1 = Monday to 7 = Sunday. The value of the EWeekDay is the index of the string elements:

" 1.40 1.40 1.40 1.40 1.40 1.60 1.40"

Therefore, on the day "1", the printed value will be the first in the string:

" 1.40 1.40 1.40 1.40 1.40 1.60 1.40"

On the day "6", the printed value will be the sixth in the string:

" 1.40 1.40 1.40 1.40 1.40 1.60 1.40"

Format this at will.