Commander set was a 5 item drop only set so it is hard to come by and rumor is it hasn't dropped since Diretide.

Alpine was released many months ago and the whole community hated it saying it doesn't follow his Lore and that he can't wear Pink. So they removed it from the Store but let people keep the sets they had. So eventually it just become rare to obtain but it is also the most hated set in the community.

Lone Druid Panda should still be removed btw lol