Nobody likes it when prices are artificially controlled.
If prices are fixed for an item which is monopolized by lawyers only, it is disliked even more. Even though the lawyers usually earn about half of what the agents get as commission under the old fixed pricing system. Before the lawyer signs these statements, his office must check that the entire deal was correct and above board. After all, this is what a lawyer is trained to do. Naturally, you can expect that lawyers will charge for this.