I saw this offer again the other week, a large lindt box for a comfortable $24 and decided to take advantage of it- 
Turns out it fits close to 3.75Kgs of chocolate in it if you pack the box carefully! 🙂
I and a girl who also worked nearby competed on who could stuff in the maximum amount of chocolate. Patience and skill on my side won out, and I won by more then 500gms!
Each layer consists of 16 individual blocks.