Crossword Help Forum
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3A A very plain standard (9) _ I _ E _ T _ _ _
(Could it be milestone?)

7D Money bringing pleasure to many, (4) _ _ ? _
The third letter is either R or N depending on whether the answer to 9A is RETAILERS or RETAILING.
Telling job for shopkeepers (9)

pikestaff?

7 Fun d - fund

chiff is correct -
http://idioms.thefreedictionary.com/plain+as+a+pikestaff

Thank you Chiff and Chrisg - I never would have got Pikestaff - and I should have got Fund