Are you communicating with them directly, or hoping they will hear you from your front door?

Most exchanges are running a simple percentage fee and adding extra traps into their code like that could be a fairly major change, especially as they get paid on the basis of volume.  They would not lightly drive their revenue stream away.

btw - 20 or 50/day might be better - it's not actually hard to trade 10 times in a day when markets are moving.