iPhone 12 Pro 128GB (base) model is $999 in USA, rumored to be 15000₺ ($1900) in Turkey.

iPhone 11 Pro 64GB doesn't seem to be offered in USA anymore (by Apple or Amazon), it's $1410 in Turkey.

iPhone 11 64GB is $599 in USA, $929 in Turkey.

Turkish prices gathered from Hepsiburada.com, one of the largest retailers in Turkey.

All in all it seems like there's 1.5x to 2x price difference depending on the model.

Trivia: There's also a government-enforced IMEI blocking scheme there, to prevent people from evading the taxes by buying it somewhere else.