We have done several projects earlier on the similar ground. We would like to propose you to build the site from scratch using PHP with CodeIgniet MVC framework to ensure site's security and scalability. We would use latest frontend development technologies such as HTML5, CSS3, jQuery, Angular JS, AJAX etc to ensure better user experience.
All features like Advance search, filter/sorting, user account, various categories, Sign up/in, user comments, secure online payment gateway etc will be integrated and incorporated within the site.
We would make the Responsive (mobile friendly) at every pixel and it will also be Cross browser compatible.
we would provide you an easy to use ADMIN panel so that you could manage/update the site anytime.
Also we would assist you to launch the site and provide you 3 months of Free Support after the launch.
We are a 15+ years-old Software and Web Development organization, based in Largo, Maryland, USA with 130+ in-house experienced developers and designers.
Looking forward to your valuable and sincere reply.