Good for you. Not every consumer takes the time or trouble to cross check batteries for accuracy, and will blindly believe whatever their vape vendor tells them. Very bad idea.
I used to work in a vape shop so I speak with some experience. I can guarantee that not every vape shop employee or owner knows what they need to know about lithium ion batteries, battery specifications, or ohm's law calculations. I was "just an sales associate" in the vape shop that I worked in. I don't know why but we had a few ICR batteries as well as IMR hybrid batteries for sale. ICR batteries actually have NO PLACE to be sold in vape shops. I actually caught my store manager about to sell an ICR battery to a customer for his mechanical mod. I pulled the manager aside and quietly told her that unless she wanted to be responsible for her customer to have that battery explode in his face, she needed to recommend an IMR hybrid battery instead. I probably saved this from happening to that customer.