Chained Payments with bitcoin like Paypal Adaptive Payments? i have to develop an etsy-like store using bitcoins as currency trading; 

As happen in the Etsy network, i have to hold back a fee for all the transactions made by all the sub-stores in the network; 

 Chained Payments - ( buyer pay $100 to sub-store and sub-store give $10 to main-store )

              main-store
               $10 fee
buyer __          |           
$100    \         |       
         \__  sub-store-# 
                 $90


i want to know if it's possible using bitcoins to have something like Paypal Adaptive Payments Chained Payments (maybe through some third party services)

thanks in advance for any feedback.
There's nothing out there that does this but it would not be a hard thing to create.  It's a relatively simple process:


set up payment for xBTC with a specific address to which to send the payment
when the payment arrives create a new transaction that sends some of the coin to an address owned by you and some on to the store owner's address


All of the complexity will be in the business rules: what's the percentage split, how long 'til you pass the coin along (in the case of shipping physical items you need to worry about a purchaser claiming against you for non-delivery), what happens if items are sourced in USD or other currency and translation is required, etc.