Turkey is an excellent place to drink Turkish coffee. And you can find Turkish Coffee in almost every cafe.
And prices in Istanbul are
Starbucks Double Turkish Coffee : 10.75 TL + 2 Pieces of Lokum and 0.5 L Cold or Normal water.
Caffé Nero Double Türkish Coffee : 11.00 TL + 1 Small Piece chocolate covered lokum and 0.35 Cold or Normal water
These are my bests
Thank you for asking us 🙂