Make sure the items you want to sell for a garage sale are priced to sell. General clothing should go for under 3.00. Winter coats or designer items can go for up to 10.00-20.00. Think small enough for them to sell, but large enough for you to profit. Leave a little room for haggling- price some big items higher, that way if people talk you down, they will be happy and you will still have made what you wanted.