Good day to everyone, I am new here and I have a question. I just got a new client who needs a mock up design from me, she saw something I did for fun and she liked it. Now she wants me to design a single page for her, just the graphics. She told me she usually pays $50 for templates online. How much should I charge her?. I'm a good designer and my designs are better than some I've seen online. Please help.

If the going rate is $50, then charge her $50. But if you're confident that your design is of a better standard, and more importantly you can convince her of that, then charge accordingly. People will pay for quality.

Just make sure that you have all costs agreed beforehand before you start any work!

your hourly rate x number of hours
your design is unique, templates aren't.