I Know What You Bid Last Summer — Sherry Harris

FOUL PLAY IN THE GYM
When it comes to running a successful garage sale, Sarah Winston believes in doing her homework. She also believes in giving back. But when she agrees to manage an athletic equipment swap, she doesn't bargain on an uncharitable killer. The day of the event, the school superintendent is found dead in the gymnasium.

HAS SARAH PLAYING DEFENSE
Suddenly the murder suspects are the school board members -- including the husband of a very difficult client who's hired Sarah to run a high-end sale and demands she do her bidding. In between tagging and haggling, Sarah studies the clues to see who wanted to teach the superintendent a lesson. But as she closes in on the truth, the killer intends to give her a crash course on minding her own business...