Sales on Atlus games have become more common in this hardware generation, but it still feels special and a little bit transgressive to buy an Atlus-published game for less than it cost at release. Of course, novelty is hardly sufficient reason to buy Sting's Baroque, but there's also the fact that it's a pretty good game -- and some people may be starved for a Wii RPG experience by now.
Amazon is featuring both the Wii and PS2 versions of the sorta-roguelike as their Deal of the Day, for a scant $16.98. At that price, you could buy both versions for comparison purposes and still pay less than regular price. Or you could save money!