Presumably services cost nothing here (4,6)

I believe the answer is:

free church

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'cost nothing here' is the definition.
The definition suggests a singular noun which matches the answer.

'presumably services' is the wordplay.
'presumably' becomes 'free' (I can't justify this - if you can you should believe this answer much more).
'services' becomes 'church services' (church service is a kind of service).
'free'+'church'='FREE CHURCH'

Can you help me to learn more?

I've seen this clue in The Irish News.

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