Price of tea at some stage (6)
I believe the answer is:
charge
'price' is the definition.
(I've seen this before)
'tea at some stage' is the wordplay.
'tea' becomes 'char' (I've seen this before).
'at some stage' becomes 'ge' (I am not sure about this - if you are sure you should believe this answer much more).
'char'+'ge'='CHARGE'
'of' is the link.
Can you help me to learn more?
(Other definitions for charge that I've seen before include "Rush to exact payment?" , "Do as the Light Brigade did" , "protection" , "Rush forward - cost" , "Care" .)