H ere´s one advice that could benefit those of you on a budget or simply those of you horrified about overpaying for the simplest things.
Never leave for the airport in Keflavik, often called Reykjavik airport, without bringing some food and drinks with you. Better yet, gorge on the breakfast table at your hotel before leaving for the airport. Else you will have to fork out 50% more for a shitty sandwich, 60% more for a small box of local skyr and up to 70% more for a frigging glass of orange juice.
Sounds like small potatoes. But a family of four having some light snacks, juice, coffee and sandwich, while waiting for their flight home would fork out upwards of 50$ / 45€ for that simple pleasure. That´s the same price as you´d pay for a great meal plus wine in many pretty nice restaurants elsewhere in Europe.
Overall, in spite of this place supposedly offering tax-free stuff prices for the small stuff is way beyond anything you´ll find in Reykjavik supermarkets. Airport super-high prices have become such a local joke that many Icelanders take pics of items each time they pass through to remind folks of the stupidity of charging so much for people stuck in transit. In fact, quite a few locals make an effort to buy something to eat on way somewhere the day before their flight in local supermarket.
Oh, and by the way, the only supermarket found in Leifsstod airport is the 10/11 chain store. That also sells stuff 50% more expensive than any other supermarket in the country.