The price is high, but two 21kW charging stations with RFID access control will be expensive any way you look at it. This kind of station is good if you are installing on your own electric bill, but in a common area. For a private garage it is a bit overkill. This kind of station is not even available in USA. All the stations that have RFID access control for public use are only 30-32A single phase, usually 208V, so 6.6kW. They also have network connectivity and data reporting for a monthly fee of about $30USD/mo. So, your maintenance fee is significantly lower per station. High power stations are available in USA up to 20kW, but I've never seen one with RFID access control. Just did a quick search for Type 2 Wallbox and found EVconnectors.com has a Type 2 Wallbox with tethered 4m 32A cable and RFID for just over 800GBP (exc-VAT), about $10,500 HKD. That is about the same price as HPWC in USA, $9,300 HKD by direct currency conversion.