When we deliver hard products to a customer we include lots of free stuff with our packaging that the buyer must return in order to get a refund. (entrepreneur.com)
One author complained: «I've got lots of free stuff for readers — novels, and novellas, but I'm not seeing the results I got even last year. (peneloperedmont.com)
Also lots of free stuff given through simply playing and completing quests and tournaments (toucharcade.com)