Frankenstein's Bloody Nightmare is now available of Amazon streaming video worldwide for purchase and rent as well as free streaming if you have Amazon prime!
Actually, I should say "yet again available" because FBN was already available on Amazon for a number of years through either Unearthed Films or TLA Video, I'm not totally sure who delivered it but it was up there.
I was able to get FBN back onto Amazon through their new Amazon Video Direct (AVD) program, which allows one to setup an account, upload a video and get paid for purchases/rental/streams. It's been billed by the press as a Netflix killer but the reality is that's more of a competitor to Youtube Red or Netflix because it's obviously geared toward uploading longform works and not some cat videos. All videos require subtitles, which is a big barrier for many. Still, opening up a streaming video service to the general public to upload stuff is a very interesting experiment.