If you mean the minimum listing price, then this has been suggested before and would be a huge help to everyone, especially non-VIP players.
If you can only list two players and your player is ‘worth’ the maximum market value, then there’s trouble ahead. You know you will be lucky to get 20% of the value, but it’ll take days before his price can drop to that. That’s a massive waste of time.
I’m frustrated enough with it as VIP-3, so I can only imagine what a pain it would be for non-VIP players.