Hi,
I am from GALTech Enterprises. We have a workforce who are well experienced in working with PHP, MySql, Ajax, JQuery, JavaScript, Wordpress, Joomla, Magento, Prestashop Open Cart etc.
After going through your job details, I believe that we can do this project for you. We can develop your requested featured B2B website portal using PHP-Codeignator framework, Jquery-Ajax. It can have all your requested features.
We can build this entire system for $1200.
If you are interested please let me know more details.
Regards,
Alisha