On Taobao, as a food, it is not feasible without buying it. There is a lot of talk about sea cucumbers. Even if you see the real thing, you may not be able to distinguish between good and bad.
The quality of sea cucumbers depends on their production, breeding methods, years of production, size, etc. Most of the cheap sea cucumbers on the market now are produced in one year and are farmed in dams. I suggest you buy the ones from Zhangzidao. I don’t know much about other sea cucumber brands. The reason why I recommend this brand is because my friend is an agent in this city. Regarding this aspect I learned all my purchasing knowledge from him.
You can go to Siping Seafood.com, which I made for a friend. It contains a lot of knowledge about sea cucumbers.