Trade10 = 5 favs 20 = 10 favs + 30 = 15 favs + + a comment 40 = 20 favs + + a comment 50 = 30 favs + + 5 comments + watch 60 50 favs + + 10 comments + watch 80 = 80 favs + + 15 comments + watch 100 = fav