Don't pay any money for this kind of stuff. Even if some think you should.
I looked at the winstep and the nexus dock. Your just trying to sell something.
Of course I am. Just like you (unless you're a kid still being supported by your parents, of course) I need money to make a living.
But you're also wrong, because, unlike the way you make it sound like, the goal is not to sell something. That's just the means, the goal is for me to be able to keep on doing what really I love to do. And because other people also benefit from it, it's a win-win situation. 
The dock is redundant in my opinion. If your surfing on the net, it's stuck behind the browser and your working off your own taskbar. Unless it's on top of the browser and then it's just in the way.
You obviously didn't work with it for very long, did you? And you didn't bother reading the very detailed user guide either, right? Not only can you make it auto-hide, as all you need to do is bump the scren edge the dock is attached to to bring it forward - and because that target is virtually impossible to miss, you can bring the dock up in a fraction of a second.
As for Winstep. It looks like it changes the start menu but not the task bar. It looks pretty cheezy to me..
Doesn't change the task bar?!
Ok, now I'm certain that whatever you tried (if you actually did try something), it wasn't Winstep Xtreme for sure. 
I like the fact that I can change my entire theme to look exactly like windows seven and it runs great. I don't know why anyone would pay money for this stuff your peddling.
Possibly because, unlike you, they actually did try Winstep Xtreme and saw how it could benefit them, and because they're honest people who think the hard work of others should be rewarded. They also know that as long as I can make a living out of this, I'll keep on churning new updates which also benefit them - unlike what happens with everything 'free', which always gets abandoned, for one reason or another, sooner rather than later (none of the free docks out there are currently in active development, except ObjectDock, of course, which, like Nexus, is backed up by a commercial company).
There's a reason why Winstep has been churning out new applications/updates for the past 10 years and, God willing, will keep on doing so for many more years.
