Penny wise is often pound foolish.
More Traditional Proverbs:
The heart of a maiden is a dark forestTraditional
Small children disturb your sleep, big children your life.
Traditional
From the ends of the earth.
Traditional
The last straw breaks the camel's back.
Traditional
A man is himselfplus the books he reads.
Traditional
The death of the heart is the saddest thing that can happen to you.
Traditional