Well, I ended up with a rare I've already got a pair of, 2 commons I've already got a pair of, and 2 commons I had none of. 200 dust and some meh cards I'll probably never use and eventually turn in for 50 dust each. Not bad for free!
My secondary account, (EU) which I rarely use, cracked an Edwin + a rare. Wow, 2nd golden epic with my extra account--two more than my main. I actually have the same amount of legendary cards on each account, despite spending way more time and about $50 in extra cash. It seriously feels like Blizzard give minimal to the accounts that spend and put in effort, while rewarding accounts that have barely any input with high legendary (and golden) percentages!