How can I promote my novel to a m market?

I've recently published a novel, entitled, "They Never Die Quietly". It's available on Amazon .com. Here's the problem: the people who have read this book have given me overwhelmingly positive reviews. However, my book is ranked in the 100,000's, so readers searching for a suspenseful thriller will never find my novel. How do I reach a m market and improve my ranking on Amazon without spending a gazillion dollars?