Bay of Blood can be in a Bava volume 2 boxset. With alot of his other famous movies for around $50 dollars, bought Bay of Blood on dvd by itself way before the boxset came out for $60 on Amazon, it might be lower now that the box set is out, since it's easeier to get now, before it was rare and out of print.
Dude, good luck if you want an original Cannibal Ferox on VHS. You can find a bootleg DVD copy for just a couple of bucks on ebay, and amazon had some newer VHSs for around 15. If you are like me, you want the originals though, and the last one I saw on ebay was Buy It Now for around 120 dollars! And someone bought it!