There's currently some vintage horror titles reduced at Amazon UK. The first two are Monthly Deals for October.
Anno Dracula - Kim Newman - 99p
The Rats - James Herbert - £1.19
Assassin - Shaun Hutson - 99p
I can't recommend
Anno Dracula highly enough.
The Rats is an interesting curio, being Herbert's first novel, although he went on to write better, including
Domain, which was the final part of his rats trilogy. There's not really any connection between the three, so it can be regarded as a standalone novel. And
Assassin... well, it's the one that features some maggots. If you've ever read it, you'll know what I'm referring to. If you haven't, you may not want to find out...