Hello,
Writing software is not that big of a problem.
The bigger issue is creating the relationships with all of the sellers.
It is assumed by me that the sellers have api's we can call to to populate the data locally, from their sellers on your platform (with permissions to do so) can create their own stores and these stores would populate with their items...
Can you tell me what your desire is? I mean I get the idea of the reference site, what I am interested in knowing is what your circumstances are and how this reference sites fits into your model.
Are you wanting to compete with the guys
are you wanting to integrate a system that auto populates your amazon, ebay google shopping sites with content on the main site.
It would be helpful to know what the project entails. From a technology standpoint it is not difficult, they mention just pasting url's so the system is generating tracker codes ( likely they are using 1 pixel trackers to do the bulk of the work ) this is not rocket science. The bigger issue as I mentioned is setting up the affiliate accounts with all of the drop shippers.
My bid is placeholder only. The cost for this could be significant, the least expensive path would be to create the containers and let you worry about managing the api calls but this seems highly unlikely. The way they are aboe to achieve what they are doing is by using 3rd party api's. They have gone in and established account with the resellers then used the resellers api structure