Shop Till You Drop...Dead! is a novella written by R. L. Stine. It was first published in 1998 and was the 25th book in the Give Yourself Goosebumps book series.
Description[]
You're sick of Reggie Mayfield's story about his dad's department store. Reggie says monsters roam the store late at night. You bet Reggie is lying--so you agree to spend the night at Mayfield's. Too bad for you that Reggie is telling the truth! From floor to floor, the huge department store is packed with scares! Can you survive the midnight hour at Mayfield's?