Moomoo first said that US residents sell and buy US stocks and options, don't charge any commissions or platform fees, but they don't tell anyone that they have to charge contract fees, and they don't suggest any fee-paying items during the transaction. Only after the transaction did they discover that they had been charged a high fee! I placed an order for the 16-lot (Tesla) option and was charged $$0.7x16 = $11.2. When I sold these options again, I would also be charged the same (16x$0.72) of 12 US dollars. If the charges were shown before I pressed the trade button, I wouldn't place an order,!