Flyers and door-to-door canvassing are inexpensive ways to advertise your sale. Be safety-minded about this, however: take a buddy with you, and insist that your kids do the same if they're helping you out. Place the flyers into the screen door rather than the mailbox if possible
Post eye-catching signs on telephone poles (in advance) and sidewalks/street corners (the day of the sale). Use bright or even neon-colored paper, and bold lettering indicating where and when the sale is taking place. Use enticing slogans to help build interest: words such as "Blockbuster," "Giant," "Blowout," or "Crazy" will help attract customers to your sale. You should be able to read the main words
There's no room for sentimentality when pricing. If you have a garage-sale-savvy friend, ask him or her to help you price your inventory (promise not to get mad when they tell you your $5,000 computer is now worth $50!). You should also visit other garage sales or flea markets to see how comparable items are valued (and to listen to some haggling to get in shape for your sale). Sticker your items the day(s) before the sale so you don't waste valuable selling time on preparation.
On sale day, if you find you've priced items too high (no one's even trying to bargain for it) or too low (five people are fighting over who saw it first), then you have the absolute right to adjust the prices up to the moment you make a deal.