Hey, how are you? Let me introduce myself:
I'm Alejandro Barreto, I'm was a development team manager and now a freelancer developer in search of clients to win experience with big projects and relationship with them, building a consulting company and helping others to reach their goals too. I have 13 years of programming experience, but you can check my profile to see my resume and certifications.
Let's get to the point, you want a commercial website, you mean like a publicity website? a site, when anyone can pay for publicity for his/her domain or website and other could know about them? Clarify this to me please, aldo maybe some specifications will be needed to start.
I can start asap, you're right if you want this in HTML with some javascript, also DB would be MySQL, this will be easy to maintain and upgrade.
Ping me and we can talk more of this ;)