The most common and most likely answer to this crossword clue is the 7 letter word CHEAPEN
I've seen this crossword clue in Financial Times
C
H
E
A
P
E
N
More clues leading to the result CHEAPEN
- Following each reshuffle, pound is lower
- Reduce price of pile in exhibition centre that's mounted up
- Cut Mass among Anglicans before November
- Downgrade pound after each broadcast
- Lower the reputation of revolutionary American writer
- Somewhat gauche? A penny lower in value
- Belittle mass held in NEC complex
- Degrade pile penetrating scent’s centre
- Almost give away? Ha’pence is silly
- Devalue revolutionary article and writer
Buddy explains!

The straight part
We know that "lower in value" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case lower in value = cheapen.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does CHEAPEN mean?
CHEAPEN verb- To decrease the value of; to make cheap
- To make vulgar
- To become cheaper
- To bargain for, ask the price of.