Logs of 9600 from Woodworkers Guild. Lumber is abou 53,000 per piece. NQ staves currently NPC for about 7400 a piece.
Today's stave market, you can get beads from more sources than ever. currently 5k to 20k is the range for beads. So with Woodworkers in some instances crafting at break even on NQ, the Ebony Lumber is now the "Sought After" ingredient in stave making.