I picked up 4 board feet of it a couple years ago and have been using it for a few different projects. The only problem is the figured pieces are too dark when finished and the lighter pieces do not have much figure. Some of the nice figured pieces go for a premium. After sitting in a bog for 50,000 years it picks up some of the mineralization of the peat.
It's also very brittle wood but stabilizes real well.
This chunk of root wood had some nice color to it. But it was the most brittle of all the chunks I got.
It's very cool to be working away on something that is 50,000 (or more) yrs. old. I just finished a necklace for my wife made from some woolly mammoth tusk and kauri beads I made.