Hi – great question!
Ticketing addons like WooCommerce Tickets certainly allow you to create multiple tickets per event (and each can have a different price) 🙂
Selling supplementary items like merchandise is generally also something that can be accomplished via the actual ecommerce platform itself (in this case, of course, that would be WooCommerce – but we also have ticketing addons that integrate with other popular ecommerce plugins such as Shopp, Easy Digital Downloads and WP E-Commerce if you prefer one of those platforms).
Does that answer your question? Please also remember to check out our new user primer – though as the name suggests it is intended as a “quick start” for users who are new to WooCommerce Tickets, it also gives you an excellent idea of how it all works, looks and feels 🙂
Thanks!