I've yet to hear from anyone that got something out of the PRS or (especially) GEMA, their German equivalent, *except* myself:
Last summer I got a red bag, a red pencil and a doggie bag full of chilies, together with their slogan "we are the hot shit for our full members"
(ok, the story is *nearly* fully true, except I can't remember the exact wording, it was very much to that effect though)
NB:"Full" members are the ~3000 members making >€30,000/5yr)