(IAAC) Dobsonian Mount

I've decided to convert my equatorially mounted scope into a Dobsonian
mount.  The equatorial mount is to difficult to transport to star
parties. I know where I can get a set of tube bearings. I need to find a
place where I can buy just the base. Any suggestions of a mail order
business that will sell me one for a 10" Meade reflector? What should I
expect to pay?
Harold Williams - Head Astronomer & Janitor, Northeast Philadelphia Deep
Sky Observatory