Think right, and you can raise fees for it (3,3)
I believe the answer is:
see fit
'think right' is the definition.
(I've seen this in another clue)
'you can raise fees for it' is the wordplay.
I cannot quite see how this works, but
an anagram of 'fees' is 'seef' which is present in the answer.
'it' could be 't' (abbreviation. e.g. in 'tis) and 't' is found in the answer.
A single letter 'i' remains which might be clued in a way I don't understand.
This may be the basis of clue (or it may be nonsense).
'and' is the link.
Can you help me to learn more?
(Other definitions for see fit that I've seen before include "Perceive in good shape, so choose to do?" , "Consider appropriate, decide to do" , "Consider appropriate or choose to do" , "Consider to be proper or desirable" , "Want" .)