ShaulaEvans , When I narrate an audiobook partly or totally for royalties, I usually get free review copies from Audible. They are for Audible only, not other platforms.
Specifically, they are for Audible US and Audible UK.
You can access those Audible storefronts from other regions by changing the location settings on the Audible phone app or a location override link on the website.
I'd love copies for more platforms & regions but it's out of my hands. (Talk to the behemoths!)