I was only able to order the Stormtroopers from Shop Disney. Never the Rebel Fleet Troopers.
Oh, and I just remembered a figure that might make sense in this format - the Klaatooinian Raider that was the pack-in figure with the AT-ST Raider! That figure sells for over $60 by itself on the secondary market. The leader of the raiders was never made. Plus the AT-ST needs a crew of two.