Honestly, it's a combination of meh steelbook, and a movie that is vastly overrated with timed in dialogue from a certain era - that has now dated itself.
I believe comedies don't sell as well due to the watchable factor - that they can be watched over and over vs a drama or mystery. Many collectors of steel keep their steels sealed, thus watching a hangover a few times aint going to happen. They have a cheap blu ray for that purpose- fort instance, Old School, another VV movie I watch whenever I am in the mood for a laugh.
For example, I just watched Nebraska - and it was one the best films I have ever seen. Pure drama and simple powerful storytelling with well timed humor. No monsters, aliens, no FX, no guys with hammers fighting green monsters - and certainly not a movie I would crack open a few times a year. Yet, when that steel comes out and a nice job done, I will be all over that shet.