| Two retailers | Three retailer or more |
convergence | May not converge, i.e. switch at two fixed prices in Feasible-Price interval may converge to one stable price. | Converge to one stable price |
Sensitivity to the increment of the price | The final price tends to increase if one retailer increases its initial price. | The final price may not change if the lowest initial price is not changed |
Sensitivity to the decrement of the price | The final price tends to decrease if one retailer decreases its initial price. | The final price tends to decreases. When more retailers are involved, the tendency is more significant. |