penny-wise

adjective
pen*ny-wise \ ˈpe-nē-ˌwīz \
1598
  • wise or prudent only in dealing with small sums or matters

penny-wise and/but pound-foolish

idiom
penny-wise and/but pound-foolish \
  • careful about small amounts of money but not about large amounts —used especially to describe something that is done to save a small amount of money now but that will cost a large amount of money in the future
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