“…We did not address questions like: where are these products coming from, how are they restocked, etc. Only recently we have proposed an initial conceptualization of the logistics subsystem through which e-shops purchase products they sell ( [8]). We have observed that while processes involved in client purchasing a product are very similar to these when stores re-stock their warehouses, there are also important differences concerning issues like: product demand prediction, offer selection criteria, interactions with wholesalers (including B2B portals as infomediaries), methods of price negotiations, trust management etc.…”