When the market is slowing down it becomes very easy for REALTORS® to promise more to get your listing. This is a downward slope that does more harm than good to the unsuspecting seller.
Recently I have seen sellers going with the highest price and then sitting on the market for an extended period, and dropping their prices along the way; always a step behind the market. The eventual selling price is usually far below the market price at the time of listing; losing the seller thousands of dollars.
This can be avoided by simply pricing right at the beginning. Many sellers feel they can always come down later and want to try a higher price initially. Many Realtors will allow this process to happen to appease the seller and get the listing. A good agent should show you that this will not make you money, but will instead lose you money.
Is pricing enough? No. Your listing must be marketed right. It must reach a large audience, in a real estate market that has few good buyers, to get the highest price.
Promises could end up getting you poor results.