I choose certain estate sales. I frequent these people often and they're local. They usually have 2 people in each area and one at the door. A green ribbon or duct tape on the handle let's the guard at the door know the product has been paid for. The green is like the go light on a street signal. Usually anything that needs power usually is plugged in for convenience or is located near the multi-plugs. I went to an estate sale of a quilter. Everything to do with sewing/quilting was all contained in the quilting room. One day was totally devoted to it. They only allowed a few in at a time and for good reason a couple tried walking out without the green tape on the bag. They tried to say it was only a few scraps that wouldn't be missed. The bag was taken away and they were escorted off the property and banned from future estate sales, all of them. Other estate sale hosts were notified of the shoplifters. They are among us, sadly.