If there is no demand for a specific seat (1A), on a specific flight (tomorrow), under specific conditions (no saturday night stay) the price does NOT go down to attract customers for that seat - under the exact same conditions. That seat is placed in another bucket/market (e.g. leisure) instead. In short, if you want something under specific conditions - the price is set for that prduct - whether there is strong or no demand for it at all makes no difference to the price you are going to pay for that product - just the number of seats allocated for that market.