OSP PCB surface finish related to PCB advantages.

The PCB OSP surface finish effect many PCB factors.
Some PCB OSP effect factors were obvious.
Some were not.

The first factor is price.
I think here the price not only the OSP PCB surface finish.
But also the PCB board price.
Of course the PCB price includes the OSP surface finish charge.
If other factor is the same.
Different PCB manufacturers have a different OSP surface finish.
Even some PCB companies use different PCB OSP technological.
So the PCB OSP surface finish effect the price.

Second factor is the availability of printed circuit board.
The availability of the circuit boards is the most important performance.
Especially in some security electronic industry.
Those require PCB supplies must use a more high degree PCB OSP technological.

Third factor is the shelf life.
The shelf life mean produce effective.
If you have a long shelf life.
Then the PCB making process may more ideally.
And the OSP surface finish process has more time to deal with.

And then the assembly's ability.
If you have read HTD circuits shared article about the surface finishes.
You may know the assembly's ability is depend on the surface finish.
Because most of the components were assembly on surface of the board.
If your purchasing very low quality PC boards.
The assembly result may very bad.

So PCB OSP Surface Finishes vary in price, availability, shelf life, reliability and assembly processing.
Above just list the main factor of the PCB OPS surface finishes technological.