DPO Dynamic Product Options

Absolutely amazing app and incredible support! The app is extremely useful with features that are unmatched by any other app - or group of apps. Support is fast, provides solutions, explains how special requirements can be accomplished, and offers tips to assist users of all levels kindly. I needed help with syntax for complicated (to me) pricing formulas. I had a special request to display product weight in a special way.
I had another special request to change the default behavior of the app with respect to display on the product detail page.
I needed help finding errors in formulas.
Itoris support and Roman were extremely helpful in every case. 5 plus 5 times 5 stars!