There's another Groupon running with some of the same terrific one-day deals to the 2013 Northwest Chocolate Festival on September 21 and 22. I haven't yet written a posting about this year's event, but here's info about the 2012 event and you can read about this year on the Northwest Chocolate Festival website.
You can purchase a one-day pass for either Saturday or Sunday for only $18 (vs. $35) or a one day pass for two people for only $34 (vs. $70). Unfortunately, the full weekend passes sold out in the prior Groupon. This is my favorite chocolate event of the year, and this offer is likely to be the best price you'll find to the event.
Here's a direct link to the Groupon. It is scheduled to run through Sunday, August 18th, but may end sooner.