ECommerce website using Shopify, woo commerce

Hi, i need to create a eCommerce website using Shopify, woo commerce, magento platforms for a mobile accessories online market example website - (info fjernet). This is bit heavy website but i am planing to make bit simple with less than 10mobile brands and accessories. Need quote as early as possible planing to start very soon. Required : Fixed Cost (not interested in monthly plans or variable cost), Phase of development, approx cost for hosting, Duration for this project and Terms and Conditions.