It’s completely normal the static and dynamic lines described especially one being stronger than other, we not symmetrical and one side of our face is definitely stronger, I have one muscle on right side of my brow I have more tox in than my whole face just there, that’s how strong it is!
That’s a good point you bring up, I’m not a sales person, I’m a medical professional, that comes first and foremost especially when it comes to ethics, which to the dismay of my bosses and my commission

a lot do work commission based so just be wary of upselling, but if you come in armed with knowledge they will be more inclined to do what you want.
I always suggest consultation first then if you get a feeling you can treat one day, if not you can go away and think, one of the questions I ask is why are you considering this treatment, and you’d be surprised at how many people say my daughter says I should or my friend said I should, and I say but do you want to because at the end of the day if you not doing it for yourself then maybe you need to think about it.