Ignore pressure to get dope at a higher price (4,2)
I believe the answer is:
'ignore' is the definition.
(I know that pass up is a more specific form of the action ignore)
'pressure to get dope at a higher price' is the wordplay.
I cannot really see how this works, but
'pressure' could be 'p' (abbreviation) and 'p' is located in the answer.
'dope' could be 'ass' (both can mean a stupid person) and 'ass' is found within the answer.
'higher' could be 'up' and 'up' is present in the answer.
No letters remain.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for pass up that I've seen before include "Refrain from seizing (an opportunity)" , "Fail to take advantage of" , "forego" , "Have nothing to do with" , "col?" .)