You can think that the so-called green is fake, basically for fun.
Your original price is more than 300, not to mention the cost. His purchase price is basically less than that of 50 yuan.
I used to make jewelry in Beijing. I graduated from jewelry major.
Jewelry in a jewelry store, for example, a piece of jewelry with a purchase price of 3,000 yuan, can be sold for 8,000-10,000 yuan after being put on the counter.
So you can estimate for yourself, the cost is very low.
Jade A goods with bad color are all 100 in the wholesale market. The lower your basic synthesis cost, the better.