They cover the few things we could not implement into /s. The reason being is, shops operate off of a "currency". For those few things you see in the vending machines notice scrap is not the currency but each item has a different currency (stone, wood, frags, etc.). That would mean we'd need to make an entire shop section for EACH of those currencies. So we'd end up with 1 shop for metal frag currency that you can sell scrap to and nothing else, then another shop with wood as a currency and you can only sell stone to it, etc.