Hi,
As far as I know, limited quantity items (no copy) still have to use the old Magic Box method. You can get a Magic Box on the Marketplace. It was a little involved to set up. I think I watched a Torley video on how to set up a Magic Box on the Marketplace to create my KittyCats box store.
This is a link to a post about still using Magic Boxes for limited quantity items:
http://community.secondlife.com/t5/Merch...-p/1917883
which said
"For the time being, limited-quantity items can continue to use Magic Boxes and will not be affected. “Limited-quantity” refers to items that the Merchant does not have rights to copy (such as breedable animals which are “no copy” for the seller)."
Hope this helps!