It's a huge market of things that some people want to buy because they are stupid or because nobody is willing to sell the stuff. Something like
succinic acid is sold for 10 cents/5 gramms, while 1 kilo of it costs 1$. 20$ for selling 1$ stuff.
For example, some time ago I was looking for vanillin, and I could not find it - it's either 2 grams or 25 kilos. |