This is why the price is so stupid.
I, like many others, have already spent $60 for the base game, $40 on RoS, and now they want another $15 for a single class (when Diablo III is still behind Diablo II plus LoD by one class), and the content to provide for the new class is going to be nothing more than 30 min. of "these are some neat areas!" until you instantly hop back into rift farming.
When PoE has been 100% free this entire time, has done nothing but better itself, and has added many new "classes", skills, acts, maps, items, etc. It makes Diablo III look amateur hour while also charging a premium.
Right now its $115 for all Diablo III content if you've been playing since release, and $0 for all PoE content if you've been playing since release. As well as newcomers!