http://www.pcgamer.com/star-wars-battlefront-2-hero-costs-reduced-by-75-percent/

In response to the massive backlash against the cost of hero characters like Luke Skywalker and Darth Vader in Star Wars Battlefront 2—this EA reply to complaints on Reddit has earned 450,000 downvotes in just one day, making it the most-downvoted Reddit post of all time—Electronic Arts has announced that the amount of credits required to unlock the "top heroes" will be reduced by 75 percent.   

"Making games great comes from regular tuning. As one example, today we’re making a substantial change based on what we’ve seen during the Play First trial," executive producer John Wasilczyk wrote. "There’s been a lot of discussion around the amount of in-game credits (and time) it takes to unlock some of our heroes, especially Luke Skywalker and Darth Vader. Unlocking a hero is a great accomplishment in the game, something we want players to have fun earning. We used data from the beta to help set those levels, but it’s clear that more changes were needed."