One of the benefits of this project to the sellers is they will get a 50% Ad profit share, which is good because even though you can't sold or all of your product are sold you will still receiving your benefits, and also the buyers will also benefits another 30% of Ad profit share if the product is being sold.
That's a nice idea regarding to the bibium project, that the both buyers and sellers will be receiving benefits even if the product is not sold out, but it is much better if the product is all sold out.