I frequently work with special use cases of WooCommerce that shows the flexibility of the system and how to achieve very complex order setups with just a little bit of planning. For example, here are two tutorials I’ve put together (along with many others if required): https://support.woothemes.com/hc/en-us/articles/203103917-Creating-complex-order-builders-with-bulk-quantities-in-WooCommerce

https://support.woothemes.com/hc/en-us/articles/202752013-How-to-Sell-Your-Photography-with-WooCommerce (this one has video and a web demo)