I'd say the world economy is going to play a part. It's a lot different spending $49 in a group buy but something over $100 probably isn't going to sway many. While this is a nice group buy parting with $$$ up front doesn't seem to spark the but" it's $ for each plugin".
I don't do vocals so the strip doesn't do anything for me. That would be the only one I'm missing. Sad that I haven't even bothered to explore all of these great plugins.