Whyteoutt's Comments
Rise of Shadows Hearthstone Expansion Guide! Release Date, Card Spoilers, Pre-Purchase Info, New Mechanics And More!
Right there, under bullet point “Two Pre-Purchase Tiers”, at the very end in parentheses, it reads:
(you can buy each of them them once)
Typo and all. But, hey, tl;cr
Not a problem. Just pointed out that if he actually read it, he’d have known the answer.