Last walnut I bought, 200 bf. was at $8.40/bf. delivered from Ohio. almost all 4"-6" width, steamed and lots of sap wood.
locally now it seems to be about $12/bf. quality unknown.
Cherry oak, and maple seem to be holding or falling and are reasonably like prices 5 years ago.
Common exotics have fallen and are in the $5/bf. range.