As noted, the digital prices vary.
Individually are like that, but when you buy one you get a discount in the other.
Buy Bayonetta at $30 = Bayonetta 2 is discounted to $30
Buy Bayonetta 2 at $50 = Bayonetta is discounted to $10
And sorry, but no "WTF NoA".
Like Metroid Prime Trilogy and many other Nintendo games, barely noone bought copies of the first shipment, which caused copies to be lowered in price and even put on clearance because stores just wanted to get rid of them.
So now, they're finally out of inventory.
So it should be "WTF gamers" for not buying enough to sell the first shipment and "WTF retailers" because they won't bother on ordering more.
Watch the same (to probably) happen to some like Codename STEAM, by the end of 2016.