I have been to a few sites lately that sell Makiwara stands, bases and other stuff for a pretty hefty price. I think I can build one stronger, cheaper and better. I have started the project and will show you each step of the way. So far I have spent around 10 bucks for everything to do my base. You can view my project at Makiwara Project wep page.
If you have any questions, please ask or PM me.