Sadly i heard on the CN forums that Brian Reed who makes the Roud Table Platforms is not going to make any more. On the upside i have been following the progress of a localy made platform. Telescope and Astronomy's last newsletter mentions that they now have a working platform available for customers.
http://www.telescopes-astronomy.com.au/
But as Carl has noted these are not really suitable for long exposure DSO Work. But Mike (iceman) did do quiet a bit of his initial Planet work hand guided then on a Brian Reed Platform.