Tips on building an online marketplace from scratch.

What are the benefits (other than significant time savings) of using the no-code (leveraging templates) vs coding approach? Fluent in Python, but will need to learn Javascript/React for Frontend. I have a very clear idea of the product I want to build out, and the framework I'll be using. I guess it just depends on the amount of time I'm willing to put in before launching it. What are your thoughts?