How much do you think they're worth?
 

I just got my GMMG but I'm not going to need the tips because I have CME so I was just wondering how much you guys think regular GMMG tips (not the oval premium ones) would be worth. They are single slash cut tips, nothing real special and have some minor scratches and a little rough around the edge. I was thinking maybe like $20 plus shipping. What sound about right?