Some museums in Istanbul are quite reasonably priced. In particular, İBB Aşiyan Müzesi and İBB Atatürk Müzesi, which are operated by the Istanbul Metropolitan Municipality, are accessible in price despite being important venues showcasing the lives of Tevfik Fikret and Atatürk. Additionally, Galata Mevlevihanesi Müzesi preserves the deep heritage of Ottoman culture while offering an affordable entrance fee. I recommend checking each museum's current ticket prices before your visit, as pricing may be subject to seasonal changes.