Yer.
Fifty clicks on the MTR would definately be the top whack, I think about HK$ 12:50c.
But that's about the limit you could travel on the MTR, Hong Kong is a widely dispersed region and is better served by bus.
Interestingly (or not), from my home (in the north-east New Territories,) it costs about GBP3:20p to get to and back from (return cost) the CBD - using mostly the MTR - and yet closer to GBP3:80p, return, on the bus. When I used to commute, I preferred the bus unless I was late, since it goes straight throught the mountain tunnel and harbour tunnel and I can read on the way there and back - he "tube" route involves a short bus-hop to the tube and then four changes, walking, escalators, crowding, etc.
If I was late, I'd take the minibus to the MTR and then do all the walking, changing, standing, etc. It took about 55 minutes door-to-door to get to work. The bus route takes about 1 hour 10 minutes.
Given that I live 1 minute walk from the bus stop *** and the buses (both mini and double decker run every 4 - 10 minutes and the trains run every 1 1/2 minutes (yup one and a half,) and the system, in total, is clean, efficient, convenient, safe, cheap, etc. etc., it's unsurprising that less than 5% here own private cars (and 50% live in social housing too, BTW).
And remember, we're talking about a 30km journey each way here.
In a society (similar in size and affluence to London I guess,) it makes sense to invest in public transport. What %age of Londoners own cars?
No smoking, no eating, no drinking.
*** Oh and I live here by the way and can still enjoy the public transport system that will convey me to the city within in an hour.
Woof