Commercial Plugins for Unity Pro / Unity iPhone Advanced?

I'm looking for a list of Unity plugins (both Pro and iPhone Advanced) that are available commercially. I only know of GuiX so far and i believe it's $100 per license. Are there any others?

I'm interested in this because i want to learn if there's a market for selling commercial plugins as i'm currently looking into ideas that would allow me to get an additional revenue stream. Since i love making tools and helping others it would be a perfect fit and good thing to spend my time on between contract work. So as to not get bored. And well fed.

 

I would be interested in iphone plugins that would make my life easier. Not all of us are super programmers, so maybe script packs and plugins alike.

 

The only iphone plugin that is being sold is Bliprobs Enhancement Pack I think.

All others are normally free as they come with the "social platform modules" (plus, open feint, agon, ...)