I imagine most of you are aware of this, but I thought I'd mention it anyway. I was browsing at Best Buy today and I saw some two-disc sets from Anchor Bay that combine some of their Hammer releases into handy double features. I noticed "Frankenstein Created Woman" paired with "...Seven Golden Vampires," "The Reptile" paired with "The Lost Continent," and one other that I can't quite recall. They were priced at $15.99, which is quite cheap, in my opinion.
