E-commerce/shopping cart/ebay Store

We are looking to build an e-commerce website with shopping cart & integrated eBay store. Front end and back end functionality. The front end design: We are wanting a similar lay out to the following websites: [login to view URL] [login to view URL] Back End Set-up: Must function properly (BUG FREE) Desktop Browsers: Chrome, Firefox, Safari, IE Mobile Phone Browsers (touch enabled site): Safari for iPhone, Firefox mobile, Android browser Tablet Browsers (touch enabled site): iPad Creation of eBay Auction Templates (HTML) that are made easy to edit for someone with a non-technical background. MUST BE SEO OPTIMISED and DESIGNED FOR TOP RANKING SEO PERFORMANCE Paypal integrated with fast checkout & integrated credit card payments Payment Gateway setup integration Courier postage fee calculator Creation of product catalogue , New Arrivals , Return policy , how to place and order... Generates Invoices, emails to customer, retains copy, stores customer records Member registration , login. Member & non-member purchases Wishlist cart Customer database Inventory management function for shopping cart Ability to easily add/edit products - photo, description, price, discounts, in/out of stock Product search function Login, My account, my wishlist, my cart Ability to add to My cart as a guest user, and then be prompted to register upon checkout Product range at the bottom of page with hyperlinks to different product categories Contact Us form submission page linked to customer service email address Complete and thorough bug testing I need to get an Spreadsheet excel xls ( all products ) import and export (I attach with excel format) this format will be compartable with the website you build. I need to change product prices, shipping and picture details(offline) there is about 3500 items.,Then import , export to through out FTP or upload use Vqmod. infact I would be happy if i can get a software developer that can create a software than import the excel file convert it into csv or xls format and Allow The formating of images, description, prices ( similar to auctiva ) I am looking for a talented company or individual to take on the task & design the shop to make it look clean & professional. Bidders 'MUST' have had previous completed projects within this field and be able to provide samples. If project work is done with satisfactory results we can look to have a long term working relationship.