Bite Me, by Parker Blue (sorry, Christopher Moore's is still $1o.99)
Book Description
An edgy book for teens that spans the gap between YA and adult fiction. Life after high school is tough enough without having to go 15 rounds with your inner demon. Val Shapiro is just your ordinary, part-demon, teenaged vampire hunter with a Texas drawl. And a pet hellhound named Fang. Soon enough she finds herself deep in the underbelly of the city, discovering the secrets of the Demon Underground and fighting to save those she loves. Whether they love her back or not.