If you are still wanting to build your own, don't discount the various options available from Linn Lumber. You can buy everything from a single part to a kit to a complete head. If you buy the stuff that's hard to get locally and do some judicious shopping for the local stuff, you can get in to a mill pretty reasonable. I bought a kit for the 19" head and I think I have about 1700 in it. Of course, it is still setting in my shop partially assembled, but since this is my retirement day, hopefully the mill will be running in the near future.