You got some decent logos for those 15 bucks. You can't offer 15$ and expect to receive a logo that is worth 100$. If you go to a restaurant with 15 bucks in your wallet, you can't expect to be served with an old wine and Beef Wellington... you should be happy with a burger and coke.
Its not my first time opening a Contest for logo , and trust me I have seen amazing quality for $15 in the past In your words Atleast i could expect not just any burger but a Tasty double patty,cheezy, and Non Diet Coke
You're so right... This forum sucks ... I think more than half of the contests I participated in had no winner. And if the CH is really interested to get a nice logo, he could provide helpful feedback, but anyway I totally agree with the idea that you get what you pay for.