If you visit Mexico, they certainly are. I'm not sure if they might be higher close to the U.S border (a common tendency for many products and services in Mexic

If you visit Mexico, they certainly are. I'm not sure if they might be higher close to the U.S border (a common tendency for many products and services in Mexico, I suspect because of higher demand from American visitors) but anyone visiting any private clinic wherever in the country can simply pay for services at the same price charged to any local. These prices are often posted on CLINIC websites or publicity material, so it's usually easy to know if they're honestly being applied. As for the quality of doctors and the authenticity of medicine in reputable private clinics, in my experience problems are exceptionally rare, Though language barrier might be an issue in some cases. Not promoting anything specific here either, just describing personal experience from years of living here (and sometimes having needed medical services or medicines)