Globo Product Options, Variant

Their support is excellent. I mainly use the app to make a required checkbox for customers to acknowledge that a product is at final sale and not eligible for returns or refunds. The app makes it easy and it works seamlessly on the front end. Every other option I considered was overly complex but this app solved my problem elegantly. When I wanted to customize some features that weren't available in the app settings, the support team was able to provide me with the relevant CSS class to do some styling of my own. I'm impressed so far.