I bought a Zinus brand 9 inch deep queen sized box spring as part of a package deal with my new mattress, but ended up not needing it. It's brand new, still in the box. It requires some assembly but comes with all necessary tools. See Amazon posting here: https://tinyurl.com/y8ga2w7x It retails for $118 on Amazon, I'm willing to take $90 OBO. I'd prefer it to be picked up, but I can help load it.