Hi, there are lots of sites on net that provide Ready-Made WordPress themes. I know one among of them called
MotionTheme - Premium themes development that provides Top Quality work to their customers and offer clear support and help in case if needed. I also bought a theme last week from here and I got nice view of my site via their theme. It really Perfect base for your startup or running blog. Hope you will be satisfied with their ready-made themes.
Good luck