In the art of negotiating the price down or finding a property with a great price, keep this in mind:
If the property isn't priced correctly and you know it, the seller's realtor and the seller for that matter will most likely know. (The seller is most likely just being stubborn and the realtor is hiding their true opinion.)
Don't wait until they lower the price because everyone will jump on it. Don't be afraid to go after the correct price/great deal ahead of time. I have had multiple clients wait until the price is lowered, only to have every Tom, Dick and Harry offer on the property. This can drive up the price and add to frustration. Don't be afraid, they can only say "NO".