Well lets be practical, and more logical....
A Flying School is in the business of providing 'experience flights' to
members of the public, and PPL training. So the passenger, or student, will need to be issued with a PLB. So the Club will need to have spare PLBs if they have several aircraft.
So if you hire the aircraft as a PPL pilot, then in some cupboard there will be it's associated PLB gathering dust, which the club might hire to you for a quid or so.