Replying to Cracked Piece

so i have a glass piece and it has a pretty big crack in it. I can still smoke out of it no leaks or anything but i have a 1 hitter, 2 bongs, a bubbler, vaporizer and 4 other glass pieces so i have no use for it. Should i smoke as much as i can out of it break it once its pack full of res and scrape it or sell to this dumbass kid i know who will buy any piece for $40 (my friend sold him a bong with a leak in the bottom and he payed $100 for it!!!)???