Well, today when I tried to sync my calendars, it didn't work. When I opened the preferences panel I found that there was a new, 1.0 version available. So, I cruised over to the Spanning Sync blog to see what was up and found prices that astounded me: You can either pay $25/year or a one-time purchase price of $65.
While I enjoyed the convenience of having my calendars in sync, this is way too pricey for me. I was planning on getting my wife and kids to use this to keep their calendars in sync. I even recommended it to members of our Boy Scout troop. However, at these prices, I think I will be forced to look elsewhere. Buying 2 or 3 copies of this software is not cost-efective for me.
I applaud the developers and wish them well in their business, but for the time being, I'm going to give gSync a try.