What makes your bamboo poles awesome? That they are heavy and will snap?
To the thread creator, people don't usually sell used poles. Just buy a pair from your local shop. Go carbon fiber if you want it to last, but those are expensive. Any aluminum pole will do.
i got lucky and found some armada poles at my ski shop, i like them a lot, really good grip, but ive never seen them in another shop, only on the internet. scott makes some good one though, try them
The fact that no one else has them and that you can't buy them anymore make them awesome. And they're actually very light and strong. Check into some things made out of bamboo you'd be surprised.