If you are going to need a passport in the near future do so before April to save $10.
On April 2, 2018 the fee to process your passport will increase from $25 to $35.
From the U.S. Department of State website:
“The Department of State published a Final Rule on January 31, 2018, that increases the passport execution fee. The passport execution fee will be $35 starting on April 2, 2018. This rule increased the fee $10 from the previous $25 fee. Individuals who apply for a passport renewal by mail will not see a fee increase.”
More information can be found here: https://www.state.gov/r/pa/prs/ps/2018/01/277799.htm