I read somewhere you can use any theme with eStore, but here's a caveat for you: when there's overlap, something's gotta give.
I set up a newsletter subscription site with Profits Theme. My plan was to sell single issues with eStore, and provide access to the site using the membership model built into PT for the "subscriptions," with recurring billing.
Each product on its own does the same type of thing - you create a product and post a buy button, send the buyer to Paypal, then authenticate the user automatically and provide access to the product or page. But while eStore allows unlimited products and all sorts of custom discounting (which I really need!) PT allows just 10 products and no discounting.
But if I use eStore for the buy button and authentication, PT doesn't recognize it. And vice versa. It would be nice if I could hand off authentication from eStore to PT, but they claim they don't support eStore and don't plan to.
So I can have either the shopping cart and wonderful product features in eStore, or I can have the cool, easy to setup and manage web site and membership system in PT.
If there's a solution for this, if anyone has figured it out, I would sure love to hear about it.
Sigh...
Gonna go look at eMember...