Build A Website With the Basic Functionality of Etsy.com

The idea behind the website is basically to allow users to create their own shops on the website which will act as a marketplace consisting of several shops selling their products on the marketplace. Shops will be classified into two, 'brand' and 'store'. A 'brand' is one which sells its own 'original' products and a 'store' is one which sells products by existing companies (basically a normal retail seller). The exact model of the website that I have in mind can be seen in [login to view URL], [login to view URL] and [login to view URL], all of these websites share the same basic idea; "allowing common users to create their very own brand on the website, free of cost and under minutes" and I request you to take a moment to review them and how they work. Our new website will have products from the categories in those three websites mentioned above, but will also have products like electronics, musical instruments and accessories and all other categories which include products from existing companies in their respective categories. The revenue streams for the website will mainly be commission charges per sale for each product sold which will be incurred on the brand/store, and advertisement options for the brands/stores to promote themselves on the website. Along with this, the site will also require a wordpress blog that goes well with the main website. The framework for the website can be as per the requirements and the developer's comfort zone. If the framework is wordpress, the theme should be custom developed with all functionalities. Security for the website is critical. A website developed without proper security measures will be useless. The code should be clean, error free and organized for ease of future work. Please avoid uselessly long code. No hindrance in website speed or performance should be due to poorly written code. Thanks!