I understand the reasons behind hiring a strong agent at a fair price, but my question is this: Does it take more time or more effort to sell a 1.5 mil house or a 250k house? I can see why a flat fee can be very attractive and make sense to buyers/seller alike. Does the check get heavier when you add a few zeros? How much of a flat fee would a realtor need to consider it worth his time and put in as much effort as he would for a percentage?