I boughttwo packs in '07. Brknarrow gave me a few more. So....I have no more new ones, now. I've got most of them left......and I have maybe 3-4 that I need to replace the blades on. I just cleaned up the one I killed the doe with last night.....and I'll sharpen it and stick it back in the quiver, tomorrow (after I go through the entire little process I go through with it).

I've found them to be quite durable.

I'm sure I've got a few that have killed more than once.