I can't seem to add an option once I've created a listing, to add 'quantity'?  This was an option before, and now I can't add the quantity of plants I am selling or have available?  This is highly annoying as buyers need to see that I have 20 or 25 plants that I have in stock, not just one plant which is currently what I have to list.  This doesn't make sense now.  Trade me - please change back to how it was before!!   I also can't add $0 for a combined shipping option!!  This is highly important to add for my customers so they don't pay for postage two or three times on my listings.  Pleas...