Besides what Fred said, try local lingerie/adult novelty stores. We have stores like Adam and Eve here plus one called Priscilla McCalls. They always have stuff on sale in a bin or on a certain rack. A lot of stuff marked down to $10 or less that was more expensive at one time. Make contact with the manager and let them know what you are doing. They might be willing to work with you to make sure you get first pick on some things. Plus they might be willing to spread the word about you to their clients who might want to get their photos taken.