It is the first reason. It is Germany. By law, the realtor is required to be paid, if you got first contact through them. With that they want you to require to

It is the first reason. It is Germany. By law, the realtor is required to be paid, if you got first contact through them. With that they want you to require to sign the required paperwork, that they work for you. But as another poster pointed out, it costs everybody time when you need to make an appointment and then at first sight you see that this will not work out.