wool bedding for free

Do you believe it when someone tells you that he or she is going to give you something for free? I have to say that for me it is usually suspicious. I can^t understand it. In today^s world it is impossible to get something for free, right? On the other hand from time to time we can receive a phone call from a person representing some kind of company that is willing to give us something for free if we agree to come to their exhibition or presentation of products. Do you know what I mean? Recently a person like that called me and told me that I will get a wool bedding for free if I agree to come to the presentation of their new products. At first I wasn^t sure if I should do that. I told this person that I will think about it. Finally I have decided to go. I think that it is a good decision as thanks to this I can get something for free right? After all wool bedding is really expensive. When I cam there I have noticed that all this situation wasn^t a lie. I have seriously received wool bedding the moment I have entered this building. I was really happy about this fact and I have to tell you that I was shocked. From what I have noticed no one bought anything from this company after the presentation. What^s the point of organizing something like that, can you tell me?