Is there a reason why skin Botox prices vary from clinic to clinic?

I’ve become interested in skin texture care and am considering getting a consultation for Skin Botox, but I have many questions because the quoted prices vary from clinic to clinic. I found online that there are cases where the price difference is quite significant even for the same Skin Botox procedure. Rather than simply choosing the cheapest option, I want to know if the price varies depending on the products used, the treatment area, and the dosage. I am also curious about what specific factors I must check when comparing Skin Botox prices. Should I ask in advance during the consultation if the quoted price includes costs for anesthesia or additional aftercare? Since this is my first time getting this procedure, I want to find a place that assesses my skin condition and explains the areas that need treatment, rather than deciding based solely on the cost. If anyone has actually received Skin Botox, please let me know how much it cost and how satisfied you were with the price-to-performance ratio. If you have received Skin Botox multiple times, I am also curious about the criteria you considered most important when making your first choice.