I suspect EK were overwhelmed by the number of submissions. Plus this was the first time they tried a sale like this. I entered but did not "win" anything. At least you had a couple of weeks to submit your entries.
The recent Clack RWB sale was more traditional - given a date and time, send an email to a nominated address. Given the number of people who would have entered, and the speed at which this kind of sale finishes (3 seconds?), your email has about as much chance as getting in the top 100 received at exactly the appointed hour as you have getting picked in the EK draw.
Have patience, those who did not win. These clacks are new (which only makes it worse to have not won), but will eventually appear in Classifieds or maybe even as give-aways.
There will be another sale