Sunday's Black Friday Deals!

Oh, then they're rather useless given that the max tier is Legendary. Unless you want to settle for Unique.

Legendary really isn't a whole 'nother world compared to Unique, especially considering the money you can save by simply using potential locks instead of trusting in luck. Of course, if you've got the money, then you might as well go for Legendary, but it's just not worth the money if you don't have a bottomless wallet.