daylight robbery

Short definition from Wiktionary

Noun

1. 1
   The practice of cheating or of imposing an exorbitant charge for a product or service; (countable, rare) an instance of this.
2. 2
   Conduct which unfairly deprives an opponent of an advantage or a win; (countable, rare) an instance of this.
3. 3
   Used other than figuratively or idiomatically: see daylight, robbery.