He is seen in headgear bought at a competitive price (5)
I believe the answer is:
cheap
'bought at a competitive price' is the definition.
I can't judge whether this definition defines the answer.
'he is seen in headgear' is the wordplay.
'is seen in' indicates putting letters inside.
'headgear' becomes 'cap' (cap is a kind of headgear).
'he' put within 'cap' is 'CHEAP'.
Can you help me to learn more?
(Other definitions for cheap that I've seen before include "Shoddy" , "bargain" , "good value" , "Vulgar" , "Of very poor quality" .)