MultiPress - Themeforest Multiple and versatile layouts | 25 MiB
You can use this theme as a shopping cart site with built-in PayPal payment gateways. Create custom post “event”, assign “paid registration” from settings and set the the price for event attending.
Front-end users will be able to buy tickets for your event using their PayPal accounts. You will have access to transaction statistics, while buyers will be able to download their tickets.