I only list expensive stuff (compared to average SR buys) and to be quite honest, it hasn't made too much of a difference to things. As I provide information through consultations I have very little outlay other than my time so I have simply taken the small rise in commission as a loss to myself and my customers have seen no rise. For the vendors making tens of thousands a month (Yes, my experience says this is normal for 1-5% vendors), just take it on the chin and get on with doing your daily deeds, business is business and if you're up for keeping it successful, you've got to adapt.