I bought one from someone off of a FB group.
I bought it because it was a great deal. It came with a piece of high density foam that perfectly fills the gap. I have yet to do this, but I plan on splitting the foam into 2 pieces and upholstering them into 2 separate cushions that will match the dinette cushions.
we haven’t used it yet, but I can tell you that it squeaks like crazy, and it blocks the drawer from pulling out of the night stand by being about 0.25” too tall. These are both easy fixes, but kind of a hassle.
In my opinion it’s not the most elegant solution. It’s kind of bulky and heavy.