Where to find premium themes for multiple installations?

Hey

I’m looking for tips for a problem I have. I’m about to launch a few sites for different audiences at different domains, they’ll be their own WP installations. I’d probably have some 3-5 sites with the same theme.

I’m looking for “premium” themes (whatever that may mean) for them. My problem is that I can’t seem to find a good source to download the themes so that I would not have to purchase the exactly same theme several times.

E.g. I’ve used Themeforest previously and I’ve found some nice looking themes from there, but their licensing doesn’t allow using same theme on multiple sites without purchasing the theme again. That kind of licensing isn’t very good for my hobby sites I’d launch with a shoestring budget. I’ve gone through much of the www.remarpro.com’s theme library, but I haven’t found a good one from there.

The themes don’t have to be free, but I dislike the idea of buying same thing multiple times.

***

Long story short, my question is:

Does anyone know a source/site where I could easily browse/download themes that I could use on multiple sites?