Yes, age should be a key component in determining the transfer price of a player.
Reasons
1.Considering of young and older players when injured it takes a very long time for older players to recover.

1. It’s 50:50 when buying an older player because he/she can retire at anytime due to age or health factors which I will use Kun Aguero as an example.
2. Although older players have experience I still want age to be a factor because players like Christian Ronaldo lack certain qualities they use to have because he is old.