Alex Brandon/AP The Washington Nationals ran a ticket promotion on Monday that would take $1 off tickets for every home run Bryce Harper hit in the Home Run Derby. Harper hit 45 home runs and won the Derby. As a result, some tickets were so discounted that the Nationals had to sell $1 tickets. Washington Nationals games got a lot cheaper to attend thanks to Bryce Harper. Before Monday's Home Run Derby, the Nationals tweeted that tickets would be $1 off for each home run Harper hit in the Derby.See the rest of the story at Business InsiderNOW WATCH: What it takes to be a World Cup refereeSee Also:Home Run Derby 2018: Everything you need to know about the 8 sluggers competingSeveral MLB teams cut ties with Papa John's after founder used N-word in conference callCleveland Indians blow game after coaches warm up wrong pitcher due to nickname mix-upSEE ALSO: MLB Power Rankings: Where every team stands at the All-Star break