looking for a theme with seller sing up and customer sign up

looking for a theme with seller sing up and customer sign up , like ebay.com

There’re some multivendor themes ( WordPress / Magento ) but it won’t be able to find similar/same as Ebay with “out of box” solution as you may need to purchase additional extensions as well as services to get customization

thank you , my idea is to have a good theme with an option of seller and customer account ,
to enable the site to work as mediator/broker
do you have any recommendation for such template?

You will never find a ready made solution to meet your needs so in order to get your job done you must find a programmer or developer via Envato studio or you can get in touch with me via my Envato profile email. So once you have discussed the complete details we will get start with your work