Unlocking Website with eBay integration

In the beginning, I would like to give a quick brief of my small business. I have started selling mobile phones, Tablets unlock codes on eBay, I would like to maintain and organize my business very well to avoid miscommunications with buyers and also boost the time frames needed for unlock codes to be delivered as most of wholesalers of this business use API calls to deliver codes, this will help me keep on going without the need of doing everything manually. Now I will explain all functions that are required in this project in form of how this cycle should start and how it ends. •A customer from eBay purchase an unlock code from me and complete the payment •I will set up my eBay communication preferences to send a message that includes a link to my website where the buyer can use their eBay user ID and zip code to login these info can also be included in the message that I’m going to send to them automatically these info should be sent to my website database using API/IPN calls •customer then put their mobiles 15 digits IMEI number and MEP/PRD (for blackberries) they should also be able to check status of order by same link •The IMEI submitting field should have IMEI validation script and detect any wrong IMEI number also it should be able to handle bulk entries . •Now my website should have 4 types of entries one is storefront for guests with easy checkout and acconts customers can register with their google,Facebook etc accounts and use their email as username they can add credit to their account by using paypal checkout, ebay customers and also customers from othersites who use API so we can connect with API •I will also connect with API to the suppliers I attached below the PHP codes mainly use in unlocking they should be able to reply to orders and these replies be seen by my customers •Also I will need CMS (client manage system) for eBay for example marking order as shipped manually although I need it to be marked as shipped automatically if the code retuns or marked as unlocked •Below I attached Dhru system example of how to manage all these functions they have demo Admin Area * [login to view URL] (For Mobile view just open from your mobile) * Username: admin * Password: admin Here I will put the API calls used in DHRU system to send/reply/GetServiceList of IMEIs in PHP [login to view URL] you can download from here codes samples [login to view URL] for the website design I like it simple like this but slightly different regarding eBay link [login to view URL] storefront for guest users [login to view URL]