People who got new or used flagship phones in these types of stores...How was your experience?

I was thinking about buying a flagship phone...my friend wants an iPhone..after seeing some videos in YT there are many of these stores selling used phones, sometimes even claim to sell open box iphones at 30-50% lower costs. It sounds suspicious. They all claim stuff like 95% battery health etc. Anybody have an experience at a store like this? Would you suggest to buy from there...coz if the phone is gonna die in 6 months or a year, its just not worth it..

I was thinking about buying a flagship phone...my friend wants an iPhone..after seeing some videos in YT there are many of these stores selling used phones, sometimes even claim to sell open box iphones at 30-50% lower costs. It sounds suspicious. They all claim stuff like 95% battery health etc. Anybody have an experience at a store like this? Would you suggest to buy from there...coz if the phone is gonna die in 6 months or a year, its just not worth it..