NIK Software (now owned by Google) just updated my paid copy of Silver Efex Pro 2 to the entire suite of plugins that they offer. That is really, really nice! I have looked at them for years and put off the purchase because of the cost. And that is the other good news, for new users the whole suite is only $149.00 now.
TechCrunch has the story too: http://tcrn.ch/YDdYVb