knowing when macbook was first used

hello,

i want to buy a macbook pro, it's an older model and it's on a big discount with limited stock.
is there a way to know when a macbook pro was first used?
i don't want to get a macbook that has been on the show room floor with the backlights on for tons of hours, i have a macbook that already had a screen replacement because of the time used up on the backlight.

any app for that? or something else?

thanks.

 

does coconutBattery give the date from manufactory or when it was first used?

 

that would be to obvious... wont they just put in a new battery?
guess there is no way to know...

 

but the age of the mac doesn't make a difference, a brand new macbook and one used on showroom can have same manufacture dates you can't know if it was already used.

i give up they will just refurbished it, i still had my macbook under warranty when my screen died, i asked the price of the repair just to know and i could almost buy a new macbook for the price of the repair.