How much should I expect to pay for hair loss treatment?

I am a woman in my late 30s. Recently, I have been worried because my hair has become much thinner than before, and the amount of hair falling out when I wash it seems to have increased. In particular, the crown of my head feels thinner than it used to be, so I am looking into hair loss treatments, but I am confused by the sheer amount of information available.

My biggest question is about the cost of hair loss treatment. When I search online, I find that prices vary significantly from clinic to clinic and there are many different types of procedures, so I am unsure what to base my budget on. I am also curious about the difference between simple scalp care and hair loss treatment, and I would like to know how many sessions are required to see actual results.

I am also curious if there is a significant difference in hair loss treatment costs between affordable and expensive clinics. I am planning to have a consultation for the first time, so what should I focus on asking about? I would appreciate advice from those who have experience with hair loss treatments.