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

Lately, I feel like I'm losing more hair than before after washing it, so I'm looking into hair loss treatment. In particular, the crown of my head feels thinner than it used to be, and even when I tie my hair up, it looks like the overall volume has decreased, so I'm a bit worried about just leaving it as is.

I haven't received any hair loss treatments or medication yet, so I'm curious about how treatment proceeds when you first start. I've looked into it and found that there is a wide variety of methods, ranging from oral and topical medications to scalp care, injections, and lasers. Does the necessary treatment vary from person to person?

Above all, I am most curious about the price. I have heard that hair loss requires consistent management rather than being a one-time treatment, so I would like to know if the treatment is priced per session or if it is offered as a package over a set period.

I am curious if the treatment method is determined after checking the scalp condition during a first visit, and how long hair loss treatment typically requires to see results. I would also like to know if there are any affordable treatment options and estimated price ranges for someone just starting out.