Hats Off to a Service that is willing to create a situation where its products are encouraged to be kept in their original condition for approaching 6000hrs is all usage has been favourable to achieve this.
In my world of 1000hrs as Gauge of usage life, that could be easy 5 returns for cleaning as a mid like fettle and 5 x Overhauls,
Comparing what I would be outlaying vs the New Soundsmith Strain Gauge, my method would still leave quite a few spare coins in the coffers.