When I started Pt/Pd printing it was with Palladio paper, so I had the paper ready to go, and usually printed two or three of each print, on the off hand that I would get lucky and sell or trade one.
When I started hand coating, it was rare to make more than one copy of each print. I have learned my lesson when I had a show and only made one copy of each print. After I made the "one of" prints my process went to hell in a hand basket (sometimes it happens) and I had to switch paper, formulas and developers. Since the negatives were digital, I would have to do a bunch of testing to match the sensitizer to the negatives if I ever wanted to create duplicates for these images.
With the latest exhibit I have, I made sure that I printed two copies each of twenty-one of the final images in the show. Using digital negatives (APUG police, please note that these digital negatives were output from an image setter, so they are digital FILM negatives, none of that OHP stuff in my darkroom) now I coat somewhere between 8 and 12 pieces of paper at one time and print them usually a day or two later.