I'm curious about the cost and effectiveness of hair loss treatments.

My hair seems to have gotten much thinner lately than before, so I am looking into hair loss treatments. It’s not severe yet, but I get self-conscious about the top of my head when taking photos. I’m curious to know if those who have received these treatments found them to be effective. In particular, I’d like to know how much I should expect to pay and how many sessions are typically required. I’m also wondering if there are specific people recommended for this treatment and how the treatment schedule is determined. Since prices seem to vary significantly between clinics, I’m hesitant to make a decision based solely on cost. I would appreciate it if those who have received the treatment could share their satisfaction levels, how long the results last, and any precautions they should take.