Just got mine in the mail yesterday. The packaging and feel of it is really outstanding. The box contains the (very nice) steelbook case, which will fit into any normal DVD/game storage shelf, the instruction booklets for each game, and individual leaflets for each DLC/season pass.
Each of the DLC/multiplayer codes comes separately in the box, so if you already own some of the DLC or previous copies of the game you will be able to sell any or all of the codes along with it.
The lithographs are A4-sized and come inside a nice textured envelope that you will see as soon as you open the box.
The 6 discs (2 for AC3) all come nicely inside the steelbook case, and the printed art on them is not the original version but a redesign to match the colour scheme of the Anthology version.
A very good collection of games at a very reasonable price. So reasonable that I preordered this instead of buying AC3 on its own.