First, read this post from my good friend, BadBadIvy.
A group sale is better then selling alone. More stuff draws more traffic.
Do not bad-mouth your items
Be willing to bargain, but be less flexible at the start.
This year, author J.D., fresh from a neighborhood garage sale weekend, offers 10 new tips, like:
Display items to their advantage.
Play background music
Make it easy for shoppers test electronic items
Be sure to read the full article here!