That would be a selling point over my experience with Costco. Costco policies seem to vary by location.For me one had demo aids for the 10 min walk around in store, the other did not believe in the short “trial”. I presume that if you decided not to take the aids during their 3-6 month trials they would go back to the manufacturer.
The Costco I got mine from had no stock, I had to wait for them to order in. and they had no loaner for when mine went back in for repair. They couldn’t or wouldn’t reprogram my old aids to my latest audiogram to compensate for any changes over the years.
These are things I will consider when it is time for my next pair.