B2B E-commerce Platform for Consumer Goo

How much it will cost to build a site like this one : - [login to view URL] Including the functions/description below. As someone venturing into the world of B2B e-commerce, I'm looking to develop a dynamic e-commerce site solely for selling physical consumer goods. The key elements this project should focus on: - Bulk product upload: A system to increase efficiency by enabling mass upload of product details. - Advanced product search: To ensure customers find exactly what they need, this feature is paramount. - Multi-tiered product categories: This involves classifying the consumer goods into different categories and sub-categories for ease of navigation. - B2B functionality: Given the nature of my business, having B2B features such as bulk pricing options and targeted offers is crucial. Ideally, freelancers who have strong experience in e-commerce site development, especially with B2B focus, and adept in executing the above features would be a great fit for this project. Experience in designing B2B sites for consumer goods would be a significant advantage. How much? How long?