Also in the inventory items section there is catergories, shipping options and item specifics. Why do we have to select where we sell the item at this point. for eg. ebay or ebay store. Shouldn't that option be when you go to list?

I hope that makes sense.

(or in other words)

Say i enter an inventory item of which the quantity is 6 and i want 1 item to list into ebay and 1 item to list into my ebay store what do i choose when it comes to this catergories, shipping options and item specifics option.