Yes, all DVDs for the most part are profitable, with a few exceptions.
All DVDs get discounted after their sales dwindle....thats ALL DVDs.

I could go and pick up a copy of Transformers on DVD now for probably £5 or so, nearly a third of the price it came out for.
Does that mean its not made a profit?
Cause as of July 12th, in the USA alone, that DVD had made over $282mil.
But of course, it must have been a flop cause its been reduced in price.

You really dont know anything about retail, do you.