If you ever doubt the value of learning to sew, just look at the price of throw pillows with removable covers. Eighty to a hundred dollars? I think not!
These were “free” because the fabric had been sitting around for a while (since 2021 for the green print, when I meant to make a third new pillow for the couch, and since the spring for the orange print, when I thought I needed more quilt fabrics). The zippers were all from my stash and I even had contrast piping: