I recommend you to buy Zhengguanghe sour plum powder, which is cheap and good. If you want to buy other flavors, you might as well buy Guozhen. Guozhen's is much more expensive than Zhengguanghe's, but its taste and nutrition are good. I remember drinking in bottles when I was a child. At that time, one bottle (about 4400-500ml) was from 8 yuan, and later it was 10 yuan. There are no bottled ones now ~ the year of Guozhen.