Enter a clue or pattern or both:
The Clue
Buyer's concern (6 letter answer)
The Answer
MARKUP
Tags
Notes
The answer MARKUP is so rare that it appears less than once every 2500 puzzles.
Definition
MARKUP as a noun:
1. the amount added to the cost to determine the asking price
2. detailed stylistic instructions for typesetting something that is to be printed; manual markup is usually written on the copy (e.g. underlining words that are to be set in italics)