Stockholm (SL Bus/Train via Märsta 47kr vs. Arlanda Express 340 SEK)

Vienna (S-Bahn S7 4.40 EUR vs. City Airport Train 24.90 EUR)

While with the Stockholm one, the public transport option is cheap but a little bit more complicated (there are convenient medium priced options too), the Vienna one is really just branding and a non-obvious exit to the train station.

Ah, Stockholm. Been there as a student, went to Uppsala the day I was flying from Arlanda, and the only trains to the airport were the insanely expensive Arlanda Expresses. Had to take the normal train to Märsta, then walk the five kilometers to the airport. Fun times.