I am curious about the price of wrinkle Botox. Is it also applicable to frown lines?

Recently, while looking at a video conference screen, I noticed a vertical line between my eyebrows. It seems I have a habit of frowning unconsciously while staring at the monitor for long periods during work. I didn't usually pay much attention to it, but the mark remains visible even after I relax, so I am looking for ways to manage it.

I currently have three questions. First, I would like to know if the price of wrinkle Botox varies by area, and how the cost is calculated when consulting for both the glabella and forehead together. Rather than simply focusing on the low price, I would also like to verify whether genuine products are being used and the consultation process.

Next, I would like to know when changes become visible after wrinkle Botox treatment, the approximate duration of the effects, and the frequency at which follow-up care is required. I understand that there are individual differences. I would also like to know if the treatment must be repeated at fixed intervals without fail, and if the consultation results vary depending on facial expression habits.

Lastly, I am concerned that I might look awkward when frowning or raising my eyebrows after wrinkle Botox. I have frequent external meetings, so I want to avoid my facial expressions changing too drastically.

I am an office worker receiving a consultation for wrinkle Botox for the first time. I would appreciate your advice on what I should check first when deciding whether to start with the glabella area or include the forehead as well.