evibe - various cheap domain names, from 0 to couple of dollars a day kinda stuff.
WhoDatDog - Yep they do. They have a prominent link on the bottom right-hand corner. No charge for sales too. Just like Goldkey.
I can report that the first day's results were no fluke, day 2 and 3 are even better
I would add that Goldkey were my first ever serious parking program of about 4 months. After their performance dropped so dramatically over the Dec/Jan, I just had to move them someplace else. I did some research and decided to go with TrafficZ. Their features are similar to Goldkey.