I don't think we know what it sold for. As I read it (and play with numbers) the right column is a CALCULATOR not a final sell price...
The link above is an intermediary. The actual auction was at COPART and the sale price is not disclosed.
https://www.copart.com/lot/61424922/...ta-gorda-south
Neither place says it if it is aluminum or fiberglass...
But we've been over this before. Once the tubes have been filled with salt water they are a disaster waiting to happen...