RichThesaurus
have something in the palm of one's hand
vs
hold the purse strings
have something in the palm of one's hand
hold the purse strings
verb
To be in control of spending; to have financial power and responsibility.
How often have the words
have something in the palm of one's hand
and
hold the purse strings
occurred in a corpus of books?
(source:
Google Ngram Viewer
)