WhyPark.com
So, you have 3 sites there and have had them for 1-2 months and already made over $100? Well, that's pretty good. But what kind of traffic is each domain getting? And what kind of CTR? Exactly how much is being made with AdSense and how much from what affiliate programs? What are you doing to improve things?
You don't need to answer those questions, but those are the things that make me wonder how well it will work for me. Without some real information, there's no way to tell if I would do better or worse than you are.
I've just gotten my domains up to where I made $200 from parking last month. That's double what I made the month before, so unless I can get some solid information, I can't see paying for a service like this that may or may not work better.
But since they have the free trial for one domain I think I will try that. If it does work then I agree that the price is reasonable. Perhaps others will post what their experiences are.
Update: I just signed up with WhyPark for a free trial of one domain. If you are at all interested in this service, I suggest you contact them and get a trial account for yourself. It's pretty easy to use and there are some good options. The real test is in how well the site generates money, and if it can gain PR and links. I already have a list of suggestions for them and I could see this platform becoming quite popular if it performs well. I really like having the options to run the kind of ads I want and include links if I want to as well.