I like them and use them quite a bit. Great for the non-cello sticks and they take up alot of room in the flat rate so usually no extra packing is needed to keep them from bouncing around. The thing I don't like is they just aren't quite tall enough to squeeze in a small Boveda with them. I bought them from cigarbags.com but yes they do come by the 100 and I think I'm on my second order of 5 finger bags. Cost isn't bad, but the shipping sucks.