Umm ya, I had a place let me find it. Most I have gotten were on the expensive side, but I bought my wall panels from a place that was pretty cheap. It was like half of what they were on Amazon, and when I needed 12 18x24 inch panels that matter lol. Still cost me like 250.
The good thing is they last forever though

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@Toothless the cham
I attached some pics of a Bioactive hisser colony.
So this is where I got my walls,
https://www.reptilesupplyco.com/117-wholesale-natural-reptile-wood
I have been thinking about doing this method to see how it pans out.
http://www.neherpetoculture.com/woodnatural
The bulk by the pound cork, the cork is pretty light so 5lbs seems like it would be alot.
I have heard that orchid suppliers and such have it cheaper, I have never found those kinds of places though, the few I have want you to buy 100s of dollars worth.
There is 4 mediums and 2 rounds in my attached, so like 30 bucks, but worth. They mostly hang out in the rounds cramped up, or on the glass behind the first cork. They seem to like to be smashed between 2 surfaces or each other. My orange heads, dont really use the cork much, the males do sometimes but the females just seem to burrow, so I gave them a few flats and really high soil.