So, I kept looking for less expensive alternatives. I found some below and of course, pinned them to my Pinterest board.
I finally chose a bench after seeing a reasonably priced one on Overstock, at just $250 including shipping! It's the Renate Coffee Table Ottoman
It got good reviews for the fabric and I think the dimensions are right (18 inches high x 28 inches wide x 48 inches deep) since I didn't want one that was too short for our king-sized bed. I'm thinking of painting the legs, but we'll see after it arrives, which should be Monday! I love fast shipping!