I paid roughly $225 Aus for this plugin and have been setting it up over the past few weeks. I just donated a further $25 US because the developer of the plugin helped me with a simple modification to the code in one section.
From what I can see this developer is committed to developing this plugin and even though I don't expect it to be "perfect", the fact that he consistently responds to support questions and is committed to this means I am very happy to using it.
This is a much cheaper option than going it alone and developing the features via http://www.freelancer.com.au which would be the alternate path if this didn't work.
The more we use this plugin and give genuine and helpful feedback to any issues in the support forum the quicker it will develop and the better it will get.
I just wish these guys lots of $$$ so they stick around to keep this plugin working!!