My co-founder Sarah and I just moved from SF to travel the world while we bootstrap our startup, Canny. I'm also a huge fan of products like Shyp, Instacart, Prime Now, and Gobble that let you trade money for time. I think I could be your target customer.
However, $210 sounds pretty darn expensive for HK. I just went there last Nov. It didn't take much research at all to figure out how to get the 2 of us downtown on the bus for $40-50. The immigration process was smooth.
Maybe I haven't felt the pain point you describe, or maybe I'm not wealthy/spendy enough to be your target customer.
My feedback for you would be to work on crafting a story that sounds like "oh man, that's a life saver" rather than "save a few hours". Or maybe be more obvious that your product is just for the very wealthy and business travelers - like a high end credit card or something?
Just my 2 cents, hope it was useful. Best of luck!