I'm designing Joomla templates and I would like to offer different module styles which users can assign themselves in th joomla's back end. Right now I can only assign styles in the index file. Please point me in the right direction...

I am not trying to be rude but I see templates on your site for $20.

Why are you charging $20 for something that people can find nicer versions of for free?

I guess question remains "what is nicer?" I'm new and I might be overpricing, that's why I'm here - in the forums to hear people's opinion. I have been using Joomla for quite a while and I didn't find that free templates are "that nice" or "that functional" nor do they offer customization.
My goal is get users suggestions for designs and bring them to life. And I don't think that stating your opinion is rude