bathroom cabinet added for free

Whenever I get something for free I am immediately suspicious that this product or service is not of high quality. Do you know what I mean? After all there must be some kind of reason why they are giving it out for free, am I right? Otherwise it would cost some money and we would have to pay for it. The more we have to pay the better the product. That^s how it usually works like. Obviously it is not a rule but if you come to think of it you will agree with me that this is the most popular method of measuring the quality of something. I would like to show you an example from my life concerned with it. Recently I was buying some bathroom furniture and they gave me bathroom cabinet for free. I couldn^t believe in it. That was really surprising. I mean, I bought few items and the seller told me that he would be happy to add this bathroom cabinet for free. As I predicted it was of poor quality. I didn^t even want to take it but the seller informed me that I have to. Isn^t that funny? I wonder why they are doing this. Maybe they can^t sell this bathroom cabinet and wanted to get rid of it simply. How do you think? Have you ever been in a similar situation in life or not?