https://www.mytradehawk.com/videos/
Take the Tour: 30 minute tour of the platform
Example of risk graph at 5 min.
Also contact support and they'll walk you through any questions you have 1 on 1.
Tradier passes through all mandatory exchange, OCC and regulatory fees. In most cases this amounts to just under .10 a contract. In the case of Index Options such as SPX there is an additional CBOE exchange fee that is passed through.