I have loved using My MarketPlace Builder as a marketplace software. I have used other software in the past and found it to be boring templates that did not allow me to customize it how I wanted. My MarketPlace Builder has let me do that.. I am able to send in tickets to the support staff and they are answered in a timely manner. They are knowledgeable and provide step by step instructions when I am stuck on something.
I created a few sites using their site creator tool and they work great and have an amazing number of features. This is state of the art DIY marketplace. It's a little complex at first, but they have really improved their tools through the years.
This was the most efficient way to get my company rolling with time and money
The tool has very few customizations and they try to charge huge development costs to add small features on.