Binance's alpha value it yourself, as of now, airdropped four times

First time 290u

Second time 30u

Third time 70u

Fourth time not sent

Ido twice

First time 100u

Second time not sent

If you haven't valued it, the total is 290+30+70+100+100+100=690u*7.3=5000 yuan, cost negligible a few dollars