I added a spreadsheet to the Lumber Suppliers (Lumber Suppliers - Asmbly Wiki) page on the wiki to try to keep track of lumber prices for different species and suppliers.
If you have any recent pricing data from purchases or quotes, please add it and also add the date of the price if available. Hopefully through community sourcing we can keep a relatively up-to-date price list for suppliers around Austin. Also feel free to add additional species and sizes as needed, including sheet goods.
Big thanks to @Mollie for providing the base spreadsheet and sourcing the prices currently on the spreadsheet. She was also kind enough to include some additional data on wood hardness and a CNC feedrate calculator.