Charge that makes you feel robbed of pounds (3)
I believe the answer is:
fee
'charge' is the definition.
(fee is a kind of charge)
'feel robbed of pounds' is the wordplay.
'robbed of' is a deletion indicator.
'pounds' becomes 'l' (abbreviation e.g. Lsd - pounds, shillings, pence).
'feel' with 'l' removed is 'FEE'.
'that makes you' is the link.
(Other definitions for fee that I've seen before include "Money paid for professional services" , "Amount paid for job" , "Sum payable to professional person for services" , "price" , "Sum payable to, say, barrister" .)