A method and/or an apparatus of determining effect of offer price on distribution of time to sell real property are disclosed. In one embodiment, a method of helping price a first real property on a computer includes determining a characteristic of a probability distribution on a first length of time to sell the first real property as a function of a first offer price for said first real property. The said first offer price for said first real property may be an MLS listing price for said first real property. The said characteristic of a probability distribution on the length of time to sell said first real property as a function of a first offer price for said real property may be a probability of selling said first real property within a first fixed time as a function of said first offer price for said first real property.