I don't know how many people use it for beardies but it is valuable. Its very common for dart frog tanks and some geckos. You can try selling the big pieces to a local reptile shop or maybe craigslist. Smaller pieces could be sold on ebay.
Oh, orchid growers like cork too. Check to see if you have any orchid nursery's around.
Nice big hunks like that are probably worth a fair bit. Even smallish hunks are 20-30+ a peice. I'm jealous!
I use it in my beardie enclosure and for a "lizard tower". It's really easy for him to grip on to.
I just set Swordtail's timer for his bath and paused it so I could actually fill his soaking bowl up and he crawled over my phone and canceled the timer
Mirage came out of brumation on April 26. He was doing great. On May 2 he started acting funny. We just redid his tank, and he keeps going into one of his hides. He just lays there. He shows no intrest in food. HELP!