As a result, I had to buy another $20 Battle.net gift card so that I could buy Overwatch for $30 with the two gift cards. Now, I basically spent $40 on Battle.net gift cards to buy a $30 game, and I have about $10 of Battle.net gift card balance that I have no intent to ever spend. Definitely an annoying experience.
https://www.amazon.com/Battle-net-Store-Gift-Card-Balance/dp/B012JMS4W2

