IDIOMS

out of one's league

(idiomatic) Too good or too expensive for one.

Example: 2008, Laura Collins-Hughes, "Neil LaBute Finds Reasons To Be Nice (theatre review)," New York Sun, 3 Mar.,
  He has an unwitting instructor in his cocky, bullying co-worker and pal, Kent (Pablo Schreiber), a slimeball whose knockout wife, Carly (Piper Perabo), is way out of his league.
1964, "Also Current (book reviews)," Time, 15 May,
  Most U.S. authors trying to depict European sophistication seem indefinably out of their league, like children sashaying around in grown-up shoes.
These questions are out of my league, please let me ask a higher-up.
  An expensive car is out of your league right now, don't you think?