Buying a box set for just one movie in it seems like a waste of money.

Let's say I'm a big highlander fan, but the only way I could buy Highlander on Blu-Ray was to buy it as part of a box set with the other highlander Films.

Here is how I solve that dilemma... wait until it is available as a stand alone movie.

It WILL happen, either when they release an official stand alone set OR on the used market.

That's how people got their hands on the "bonus disc" from 2004. They didn't have to track down and buy the 2004 set to get it, they just waited until it was available by itself. Problem solved.

So yeah, if it were me, I'd just wait. It's not like the movie will be less good if you don't buy it at Wal-Mart on the day it "comes out." You won't be the first one to see it, after all.