Need help-How to sell an open hero bundle on steam market.

Guys, my question is that I have purchased several hero bundles from community market,now I want to sell some of them as complete set not as individual item.When I create listing they are created for individual item.So how can I combine different hero items, including items from items drop and sell them as a complete hero bundle,as hero bundle fetch better price then individual item.

I see a lot of guys selling inscribed items with victory gem, gold gem etc etc. That means they must have used the item as we can clearly see the gem status/counter.So how they are packing back the bundle and selling.