Drupal + Gigya + Sell subscriptions and downloads

Hi there, We need a complete solution integrating Drupal with Gigya Socialize together with the ability to sell subscriptions and downloads from the site. Key functionality : 1. One page shopping cart, similar to Foxycart 2. Ability to sell subscription for access to 1 product or multiple products & easily manage subscriptions. 3. Ability to sell downloads 4. Full integration with Gigya Socialize, allowing users to login using any social network 5. Ability to charge monthly fee or yearly fee for a particular subscription. 6. (Bonus feature) Ability to buy multiple subscriptions and be given a token that you can give other people to sign up with, so they don't have to pay for subscription. For example I will buy 100 subscriptions and then I'm given a code, which means upto a 100 people can sign up with that code and automatically be given subscription for it. Note the Subscriptions will be access to special pages and ability to download certain material all of which will need to be protected from being able to be got to any other way. A key concept is : Minimum full page refresh (so AJAX as much as possible) + easy to manage + easy CSS for all layout/templates. ******* When you are pricing can you give an indication of what it would be with item 6 (Bonus feature) and what without. Also [login to view URL], when you can start and when you think you can deliver the first version and when the final version. Also if you are sending links, please only send links of Drupal sites, no other sites will be necessary. Thank you