Feature that provide one product have other offer from another merchant.
So customer can compare some information product with other product that come from other merchant like price, guarantee, shipped by and provided by.
We have some algorithm for decide which product that must become default product that shown and which product that just become other offer.
Customer also can see spesific product that only serve from specific merchant even that product have another offer.
For deliver this feature we have make a big effort to re-structure our product data to seperate product into main product that will have other offer and product it self that specific to any merchant.
You can found sample here :