mine was a group ticket. the tour guide just gave to
us... cost NT$665.. but theres a extra charge of NT$100 for a
reserved seat i presumed, since its not stated (total cost $665).
our carriage (carriage 9) has a special EDS saying "RESERVED"
http://www.thsrc.com.tw/en/ticket/tic_time_result.asp
LOL...
Then I should think that the system is similar to what they use
in Western Europe on the highspeed International InterCity Express
trains operated by the German Rail DB Deutsche Bahn(with the sole
exception of the Austria services which are usually operated by OBB
Railjet).
Same like the SNCF(French National Railways), except for that
one, basically all tickets standard need to book, regardless of
class or distance or train type. Really hate it because you have to
book and then reserve again for every particular sector. Not good
if you are backpacking and want to get to many different
destinations quickly. And they don't come cheap too...
If only Eastern Europe(Polish PKP, Hungarian MAV, Ceske Dracky
and OBB) has a better system. Currently it is very confusing, this
system of tariffs and surcharges...
So confusing, that a case where your surcharge+tariff under
certain circumstances might be even more expensive then the cost of
your ticket itself. Really vomit blood...