Inferior inexpensive card (5-4)
I believe the answer is:
cheap-jack
'inferior' is the definition.
(I've seen this before)
'inexpensive card' is the wordplay.
'inexpensive' becomes 'cheap' ('cheap' can be similar in meaning to 'inexpensive').
'card' becomes 'jack' (type of playing card).
'cheap'+'jack'='CHEAP-JACK'
(Other definitions for cheap-jack that I've seen before include "Seller of shoddy goods" , "Inferior" .)