I am planning a one way train trip from Dresden to Krakow. I want to stopover in Gorlitz and Wroclaw. I understand that Polish trains are cheaper than German ones. Therefore, should I buy a ticket from Dresden to Gorlitz, then a separate ticket from Zgorzelec to Wroclaw? Also is the Gorlitz trainstation different to the Zgorzelec station? Any help would be much appreciated.