https://us.etrade.com/e/t/welcome/globaltrading
U.S. investors can thus buy individual H shares to try to cherry-pick
those with the most potential for appreciation as the AH share premium
closes.
The trading commission for HK shares is HKD299, which is about US$38.
You need to buy local currency to trade, and there is also a
commission on the currency transactions (though those amounts are not
listed).
If anyone has used the service and can offer more information, please
post!