Helps to make the price dear, you'll agree (4)
I believe the answer is:
cede
'agree' is the definition.
The definition and answer can be both to do with ownership as well as being verbs in their base form.
Perhaps you can see a link between them that I don't see?
'helps to make the price dear you'll' is the wordplay.
'helps to make' indicates the answer is hidden within the clue (I've seen 'helping to make' mean this).
'CEDE' is hidden in the letters of 'price dear youll'.
Can you help me to learn more?
(Other definitions for cede that I've seen before include "Allow" , "Give up one's rights" , "Relinquish control of" , "Give away" , "Give up (eg, power)" .)