The most common and most likely answer to this crossword clue is the 9 letter word PRICELESS
I've seen this crossword clue in The Times
P
R
I
C
E
L
E
S
S
More clues leading to the result PRICELESS
- Killing / beyond value
- Hilarious beyond value?
- Very funny rocks lecturer kept in cupboard
- Very amusing, invaluable
- A 20, exceptionally rare
- Soft grain, inferior but still highly esteemed
- No damage — it’s absurd
- Like the royal spinster without a name? Hilarious!
- Invaluable and totally absurd!
- It could be free or highly valuable — that’s amusing
Buddy explains!

The straight part
We know that "Hilarious/beyond value" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case hilarious/beyond value = priceless.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 PRICELESS mean?
PRICELESS adjective- So precious as not to be sold at any price; invaluable.
- Treasured; held in high regard.
- Excellent, wonderful, fantastic (often ironic).
- Ridiculous, absurd, rich.
- Very amusing, hilarious.
- Of no value; worthless.