Yesh, cheaper in transportation, but more expensive in EF20's rooms/attenting D8 (paranoid mode, activated)
Hehe, its just a theory. But in my case, i was traveling with the FurBus all these 4 years (except once i had to grab the train, for bad timing reasons ;_;), which was rather cheaper than the train, plus, i had more furs as company with me *makes a cute grin*
Oh! now that you mentioned Berlin's transportation, in the meantime, i am checking the best/cheapest route from Schonefeld airport to Sonenallee
Which i have to discuss about it sometime later in the appropriate thread :3