The most success we have had has been with gyms in our area. Gyms are updating their equipment to keep up with the latest trends. I do not know if you will get things for free but at a huge discount. We purchased an entire set of Les Mills Body Pump weights. It included 40 sets of barbells and all the weights. I think we spent $500. Now I can have 30 students following a video workout using very good used equipment. I can join in as well. Remember that big items will need serviced at some point and only one student can use it.