At $10 I can see someone donating it, but it was up to $960 by the time the judge intervened. Not a lot of people have the ability to protect these documents from further deterioration. Sometimes people buy things like this and have no clue as to their value as a complete artifact and they chop them up and frame or otherwise use parts of them and discard part they "have no use for."
I guess now we need to spend more time checking for this kind of stuff on eBay. Who knew?