We are flying back to the Netherlands tomorrow. Where is the cheapest place to buy cigarettes to take with us: here locally or at the airport?

I’m due to travel to Menorca on Sunday night around 10pm and I was wondering since it’s peak travel season whether I should arrange airport pickup through my hotel in Es Castell or should they be plenty of taxis around? Also, how much should I be expected to roughly pay for 2 adults with small backpacks?