The December Lootcrate is only going to be available for purchase for the next 12 hours.
This crate comes with an exclusive Batman Variant for Batman #36 and it comes with an exclusive POP Figure of a Batman bombed Joker, (picture below)
Depending on if you are located in Canada or the US the lootcrate could cost you $30 or $20. However, the funko pop is already selling for $30+ and the book is already selling for $20.
This should be a no brainer.