That's a preorder bonus for any edition.
The UCE is only really worth it if you absolutely must have that exclusive(?) Noctis figurine.
- Kingsglaive and Brotherhood Blu-ray can be gotten separately
- The soundtrack cd is a limited selection and if you really care for the music you'll probably get the full OST instead anyway
- Artbook will very likely be available separately as well
- The Steelbook packaging doesn't even feature the Amano art like the Deluxe edition does
It all really depends on how much you like collecting figures. I have a few from collector's editions (like that Sonic Generations one) but found for myself that seeing shit collect dust on my shelf doesn't fill me with joy and I had just been getting sucked into the hype of "LOOK AT ALL THE SHINY THINGS".