It is a good station, I liked mine, gave it away to a friend now that I have switched to Metcal.
I think it is hard to source part anywhere in the world unless you are in Japan. I had to import the ultrafine tips and hot tweezers from amazon JP. Perhaps you can see if amazon JP ships to where you are, and if the price of the parts are reasonable.
The Goot tips uses 4 pins + a earth connection, quite unconventional I'd say. I don't think it will be very easy to have it work with other tips. The station also seem quite sensitive to tip profiles, e.g. the way to detect idle and enter sleep is literally sensing the heat loss at the tip, if the heat loss is minimal (not soldering), it decides to go into sleep.