You have seen those magazines dedicated to Want Ads. There are even online ones, like Craig's list. But did you know you could make a lot of money from them?
I know a young man who found an old Honda 450 for sale for $100. He also found another ad where a person was looking for such a motorcyle. He called the guy and said he would sell him a 450 Honda for $400. The deal was made - and so was a $300 profit?
He began picking up all sorts of things from the FREE ITEMS section, then selling them at yard sales, or trading "up" for something of greater value. Just for kicks, he decided to see if he could trade a $10 item for a $5,000 item. He started with a used TV he got for $10, traded that for something worth $20, and so on. It took 8 months, but the man ended up with a $7,000 Harley Davidson - and it only cost him $10.
Think about it. Look for all the bargains, then trade up, or mark them up and sell at your yard sale. And don't forget to look for more bargains at other people's yard sales...