Hi, I'm Daniel, and I can help you with your projects! I've taken multiple courses in Web Design and Development and can use HTML, CSS, Javascript, and JQuery to make good-looking, functional sites. I can make you login/signup forms, and use PHP and MYSQL to safely store the accounts in a database. All of my code for these forms is designed to not allow SQL injection or Javascript injection, and passwords will be stores using 1-way encryption.
Depending on the number of projects that you have, my timeframe may vary from the 5 days I have set on this bid, and my price may vary from the $90 I have set.
To answer your question, simple sites (sites without databases/accounts necessary) will cost you $15, and more complicated sites will cost you $30.
If you are interested in my bid, please send me a message through freelancer.com! If you don't like using this site to communicate, we can discuss other methods of communication (Skype, Discord, WhatsApp, Telegram), from there.
I look forward to potentially working with you in the near future.
-Daniel