Keep revising the cost per kilo? (5)
I believe the answer is:
stock
'keep revising' is the definition.
'stock' can be an answer for 'keep' (I've seen this before). I'm unsure of the 'revising' bit.
'cost per kilo?' is the wordplay.
I cannot really understand how this works, but
an anagram of 'cost' is 'stoc' which is located in the answer.
'kilo?' could be 'k' (phonetic alphabet: alpha, bravo, charlie etc.) and 'k' is present in the answer.
No letters remain.
This may be the basis of the clue (or it may be nonsense).
'the' is the link.
Can you help me to learn more?
(Other definitions for stock that I've seen before include "F < for traditional" , "Reputation; shares" , "Goods in store" , "Equestrian tie" , "Merchandise - ancestry" .)