This is not necessarily available in every model, and the prices in different shopping malls are different. Some shopping malls offer firm prices, while others can make counter-offers. The normal range of JD.COM and physical stores is around 100. Official stores won't make much difference. If the price of your electrical appliance store is high, there may be a difference of two or three hundred. If it is a personal activity, there may be more than one. You must buy it in the official store of xxx in JD.COM, which is guaranteed. In some places on the internet, we don't know the small shops with too big difference, and the quality is difficult to guarantee.