I'll just sum this up in 1 paragraph. You would need the best video game on Earth to somehow justify the system, you would somehow need each item to have such an amazing journey that it wouldn't feel like an insult that someone just paid $10 to get the item at the end. Not Destiny with its get "1000 shotgun kills", no rational person would play a game where it asks some dumb monotonous task but then turns around and asks for $10 to skip.