Here are five inexpensive ways to increase the value of your home for sale. With home prices falling again, it might be foolish to spend thousands on a new kitchen or bath. Instead, say veteran real estate agents, you can wow buyers by using a few household cleaners, generous amounts of elbow grease and some thoughtful staging. A house that smells right sells right. “It should smell like a normal, clean house,” Rona Fischman, principal broker of 4 Buyers Real Estate in Cambridge, Mass.