They changed the design later. It is shorter and has a slider but it is still available for purchase. I recently found one in one of my old sewing boxes that had a $.50 price on it. I still use mine.
Last weekend I purchased a closet of rolling drawer units for $25. Found a box and bag full of embroidery floss, 90 empty bobbins, 30 wooden spools of thread, an organized box of assorted needles.