1.50 extra or more for a few extra drops if some flavoring or other. Of course, they tend to place their locations in high rent districts, too, so their expenses are not minimal. They have locales in strategic locations in the main train stations of Brussels, München, Köln, Düsseldorf, Frankfurt, Utrecht and Arnhem, surely dozens of other cities as well. Unless the service is especially unfriendly or super slow (usually the opposite), I always leave a tip, since I know how little those people earn. They are often foreign students, just looking for extra spending money. The last time I was in NL, I had a quicker trip from our office into town (Utrecht) than expected, and so sat down in the Starbucks since it was close to my track. Utrecht is a big train station. The guy who took my order didnt understand Dutch very well, and asked if I spoke English (!!). I said somewhat, and asked him where he was from. He said Germany, and was relieved when I told him it was fine to use German. He said good luck with the woman who was preparing my drink, since she was from Poland. I said no problem, and spoke to her in Polish. Big smile! My Polish is only rudimentary, and I often mix in Russian when I dont know the words Im looking for, but they usually understand what Im trying to say. I have seen situations where these young people get told off by the locals for not knowing the local language well enough, so I know they are relieved when someone shows up with no language issues.