Well, well, well, you learn something new every day, don't ya. Upon my quest for finding all things
Blood Feast, I found this baby - the novelisation of the film! I didn't even know it exsisted! It's written by HGL himself and is pretty damn rare, I guess. You can pick it up from Amazon brand new for £90 + But forget that! I just ordered it used for £2ish.
Here's the amazon link -
https://www.amazon.co.uk/Blood-Feast...0637124&sr=1-3
And if anyone's interested this link has a whole load of horror films that have been novelised (including pictures of the book's covers) - excellent stuff!
Ultimate Horror Novelizations & Movie Tie-Ins Thread - BLOODY-DISGUSTING