It's true that I agree with you, for products such as cellphones, the development is very fast. If it's too old, sometimes it can't be used again in the future, because of the demands of the times. Like the BlackBerry cell phone used to be very popular in my country, now it's been abandoned.Yes, I agree as long as the appliance for sale is fully functional, and if it is something very sophisticated such as a smartphone, it must not be too dated. It is known that they go out of order after a short time due to continuous system updates.