They are selling them on and off. When their stock sells out it seems like they take them off the site. When I ordered it I got it from XOP, but I called them because it would not let me add it to my cart off the site.
Not really any reason in specific. I have done it both ways, but found it works for my flow to hang the smaller lighter section second. Plus if I am hanging any accessories on the top portion, I like doing that second so that they’re not hanging down while working on the bottom portion.
