there are actually several sources on ebay, searching for my 2013 Econoline seats. I don't get the idea necessarily that it's a source of endless supply...and no they don't have the other stuff such as the sofa....
I'm still looking for a solution there.
Here's what I ordered...looks like only a few left...
there were also some sources for the entire seat when I was looking too.
I really wanted to go with leather aftermarket form theseatshop.com, but had to go the cheaper route.
I'd certainly suggest looking at theseatshop.com though....for fabric, vinyl, or leather!