Even within the confines of that contract, any realtor will have their limits due to the commission-based structure. If they spend 50 hours working to get you 9

Even within the confines of that contract, any realtor will have their limits due to the commission-based structure. If they spend 50 hours working to get you 90% of your theoretical maximum selling price and it would take 50 more to get the last 10%, they may end up pushing you to accept the 90% offer because the next 50 hours is best used selling another property.