Hi,
Since you are Developer membership, you can use download unlimited number of templates in 12 months and you can use templates to do your job for your customers. There is no limits for domains used. This means, as a developer,
you are free to use these templates and quickstart demo packge to do the projects for your customer which is end users.
The changes in design here mainly changing in colors, layouts, not the content images. So if you did over 50% changes of design, you can remove "Designed by Omegatheme" in footer and put your own information.
We
do not provide the membership package which allows you re-sell our templates in the way Omegatheme.com did. In the way you want to be our reseller, please contact us or register an affiliate program. For more detail:
www.omegatheme.com/omega-club/affiliate-program.html
Thanks!