Is potato 90.9 1 kg expensive?

Today we are going to talk about potatoes. Although potatoes are common, they have high nutritional value. It is also one of the "three treasures of the earth" in Northeast China. The price is very cheap, as low as 90 cents a catty. I went to buy potatoes and steamed them a few days ago, but I got a discount. Although a little small, I didn't delay eating them at all. At that time, 90 cents a catty was really cheap. In fact, this is also a discount. In normal times, potatoes also need 1 RMB 5 to go to 2 yuan.