The 1st reason is for price, 2nd for what I got. For years I've been looking out for a short movie to appear on DVD - I doubt it ever would, which is a shame. To my surprise I found it - by dint of a search for it (expecting no find).
Anyway, I have now ordered two DVD's
A home of your own (the one I wanted)
and (to make sure I got free delivery)
The Plank (almost as good).
Both of these are 'slient' (with the odd noise that could be speech).
Classic British Comedy at its best.