The deluxe shadow box is definitely worth it! There are 9 shadows, each with .04 oz of product, and a regular UD single shadow is .05 oz, the same as MAC, so it's a very big size for a palette.
In Ammo the shadows are a little smaller, .03 oz according to their website, but it is ten of them, so unless you really use up shadows a lot, it's still pretty close to full size pans. Wallpaper shadow box is also supposed to be .03 oz each of 9 shadows, and the sustainable box is .04 oz each of 10 shadows. It kind of depends on how much you will use them--I use Ammo a lot, but there are a few shadows in it that I don't like. ALL the deluxe shadows are excellent in my opinion, and you get a largish size of each, so I'd say it's a very good value, especially relative to buying them separately.
I have those palettes, use them quite often, and have barely made a dent. HTH!