Blatant overcharging involving bright boy Ray led astray (8,7)
I believe the answer is:
daylight robbery
'blatant overcharging' is the definition.
(I've seen this before)
'bright boy ray led astray' is the wordplay.
'astray' indicates an anagram.
'bright'+'boy'+'ray'+'led'='brightboyrayled'
'brightboyrayled' is an anagram of 'DAYLIGHT ROBBERY'.
'involving' acts as a link.
(Other definitions for daylight robbery that I've seen before include "A shameless swindle" , "Scandalous" , "audacious act of exploitation" , "as shoplifting usually is" , "Blatant overcharging" .)