Totally absurd charges the French introduced (9)
I believe the answer is:
priceless
'totally absurd' is the definition.
(I've seen this before)
'charges the french introduced' is the wordplay.
'charges' becomes 'prices' (I can't explain this - if you can you should believe this answer much more).
'the french' becomes 'les' (les is the in french).
'introduced' indicates putting letters inside.
'prices' going around 'les' is 'PRICELESS'.
Can you help me to learn more?
(Other definitions for priceless that I've seen before include "Beyond value" , "Wonderful" , "Totally absurd" , "Very precious; absurd" , "Killing" .)