Hi Audrey,
Thanks for checking out our plugins!
It is possible to create multiple tickets on one event and have different prices for each ticket, but there is not an out-of-the-box way to relate tickets to each other or to reduce the price automatically based on the quantity purchased. Deposits are also not supported out-of-the-box. However, with Event Tickets Plus, you can sell tickets via WooCommerce; tickets will essentially be WooCommerce simple products, which means that they typically work pretty well with WooCommerce extensions. There are several of them out there that might work for your particular use case, but here are a few that you might want to look into:
Bundling Products in WooCommerce
WooCommerce Deposits
WooCommerce Partial Payments
We do offer full refunds within 30 days of purchase, so if you’d like to take Event Tickets Plus for a test run and see if you can get it working the way you need with any of these extensions, feel free to do so! Please let me know if you have any additional questions.
Thanks,
Jennifer