What's perhaps most amazing about this two DVD set is just how cheaply it can be purchased.
If you buy directly from the distributor Alpha Video you can get each of these classic films for five dollars apiece.
Even with the 1913 version five dollars is more than worth it. That's because the 1913 version was among the first silent movies to actually be longer in length. By way of illustration Edison studios was still putting out very short but still good movies at this same time. Their 1912 Frankenstein was less than twenty minutes in its entirety.
And even though it was crude they still used some very effective special effects and acting.
As I've written before here, the Conrad Veidt version from thirteen years later was also definately worth the money. Though surprisingly the later version is actually not as well preserved, you can still make out enough of the action to be impressed by the improvements made in film techniques over the time that had passed.
For silent film buffs, I would strongly suggest Alpha as a source for other titles. Like with these two examples they're very cheap to buy and provide you with access to films that for some reason other companies have so wrongfully neglected.