more than (one) bargained for

more than (one) bargained for

More than one expected to encounter, experience, deal with, etc. The specific thing can be stated between "more" and "than." I'm so overwhelmed right now—I definitely got more than I'd bargained for when I decided to buy a fixer-upper. This project is more work than I'd bargained for.
See also: bargain, more
Farlex Dictionary of Idioms.

more than one bargained for

more than one thought one would get. (Usually in reference to trouble or difficulty.) When Betsy brought home the sweet little puppy for a companion, she got more than she bargained for. That animal has cost her hundreds of dollars in bills. I got more than I bargained for when I took this job.
See also: bargain, more, one
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.

more than one bargained for

An unexpected outcome, especially an unfavorable one, as in Serving on the board this year has involved more work than I bargained for. This expression alludes to a higher than anticipated cost for a transaction. [Mid-1800s]
See also: bargain, more, one
The American Heritage® Dictionary of Idioms by Christine Ammer.

more than one bargained for

n. [getting] more than one expected. This is certainly more than I bargained for!
See also: bargain, more, one
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions

more than one bargained for

More than one expected from a particular situation, deal, or arrangement. The transfer of a higher than anticipated cost in a transaction to more than one expected in any situation took place in the nineteenth century. In print it appeared in Frederick Marryat’s Olla Podrida (1840): “More wind than we bargained for.”
See also: bargain, more, one
The Dictionary of Clichés by Christine Ammer
See also:
  • more than one bargained for
  • be up to (one's) eyes in (something)
  • be up to (one's) neck in (something)
  • be up to your neck in something
  • be up to (one's) chin in (something)
  • chin
  • journey
  • a journey of a thousand miles begins with a single step
  • begin
  • single