Online Auction Site: A cross between ebay, madbid and zoopla

I would like an online Auction site more like eBay, madbid and other penny bid sites. I am open for suggestions for building the site using third party off-the-shelf products and customizing to my needs. Below please find summary of requirements 1. Key Capability: * Forwards regular auction with ebay features of auction and buy it now * Reverse auction * Negotiated deal (Need a transaction type chat cum mail trail window to ensure that off market deals are recorded and stored as a transaction) 2. User registration and activation *Users can register online with captcha and otp authentication. users need to submit their KYC details thru online form and also attach proofs wherever required. Administrator for the kyc module can authenticate each user and provide them trading entitlement...this can be done product wise also (meaning each product checkbox against the user can be activated as required). * common user database across products 3. Transaction - Transaction can occur thru three modes.. a). Cash on Delivery - which means we will only record txn and update statuses b). Prepaid wallet payment - where customer will have access to a specific bank data upload page where they can transfer funds upfront to our escrow account by default and then when they want to transact, then amount will be debited/blocked in our escrow account...the seller will receive credit once the transaction is deemed complete after a certain holding period of say a week or so after delivery is complete..buyer will have to acknowledge delivery (ebay style escrow hold and release) c). PG Payment - thru an online PG which we will provide 4>> Website based trading, Smartphone app trading and USSD code based trading. Payment can also be done thru IMPS riding over SmartPhone app 5> Multi lingual database file to enable multi lingual product identification 6>> Product description videos and photos 7. Customization be done for specific type of auction logic that we may provide? [login to view URL] customized color and UI Themes? 9. Multi currency capability [login to view URL] billing platform? [login to view URL] for delivery ? [login to view URL] against Bots for sniping etc 13. database and access security? 14. access to raw data base structures, raw data and source code? [login to view URL] any components for us? what are your billing rates for T*M 16. What is the product capacity to scale? Any limitations on number of sellers, buyers, no of total or concurrent transactions 17. DR and Backup facility. is a DR copy available? Additional Features: • agents portal • back end dashboard with clear easy steps. • Email Templates Manager • Category manager • Block Users • Multiple image uploads live support window • Extend time bidding • Buy-It-Now • Search engine (search by keyword, username, or item number) • Main page featured auctions listing • Main page picture gallery listing • Category featured auctions listing • Bold listings • Highlighted listings • Auction postings from 1 to 14 days • Image upload and Image crop • Choose payment options / condition / shipping / display • Auction item display like Ebay® • Auto re-listing if item does not sell • Seller and buyer feedback system • User "About Me" page • Multilingual translation • Newsletter • Online help • Billing receipt sent for new items posted • Closed auctions deleted after 30 days • Lost password/username look up Penny and Lowest unique bid auction Administration Features With the integrated site admin panel, you can easily manage all auction items and site users - directly from the website! • user information setting • user interface bid editor, to add/remove bids from users • contant manager manual user creator • category management (find by category) • live bid auction • Reverse bid auction • bid packet • paymeny report • auction status report News manager • newsletter management • advertise management Online user report Manual bid transfer • CMS and Faq • contact