Hi Sarah,
Thanks for checking out Event Tickets Plus!
There is not currently any out-of-the-box functionality for membership pricing. However, since you can use WooCommerce with ET+, in which case tickets are essentially WooCommerce simple products, you can typically use WooCommerce extensions with tickets. You would really need to test it out though to make sure that you can get it working exactly the way you want. We do offer full refunds within 30 days of purchase, so feel free to take ET+ for a test run!
Please let me know if you have any other questions.
Thanks,
Jennifer