The way to get £50 is to find a customer (4)
I believe the answer is:
sell
'find a customer' is the definition.
The definition and answer can be both acts as well as being singular nouns.
Maybe there's an association between them I don't understand?
'the way to get ps50' is the wordplay.
'the way' becomes 's' (Compass direction - South).
'to get' says to put letters next to each other.
'ps50' becomes 'ell' (I am not sure about this - if you are sure you should believe this answer much more).
's'+'ell'='SELL'
'is to' acts as a link.
Can you help me to learn more?
(Other definitions for sell that I've seen before include "Exchange goods etc. for money" , "Vend, auction off" , "Dispose of for money" , "Betray" , "Peddle" .)