I second staying away from ebay big scopes
I think this from andrews coms in sydney is cheaper(below) - Or you could do what most IISers do and get a guan sheng Dob - Andrews has the 8" starting at 350 for the basic model, prob beter to get the focuser upgrade though for extra 100. Look up their webiste
http://www.andrewscom.com.au/site-section-10.htm
The cash you saved could go toward a collimator & maybe one god eyepiece
daniel
Guan Sheng GS-500 6"
150mm x 750mm on SV1
Super low price!
$349.00 AUD
Absolutely outstanding quality and value 150mm x 750mm parabolic mirror Newtonian reflector on the SkyView 1 high grade medium duty equatorial mount with adjustable height aluminium tripod.
Includesa6 x 30 finderscope and9mm and 25mm GSO Plossl eyepieces.
Optional single axis motor drive with hand controller $129.
GS-500 Super Deluxe version includes a Crayford style 10:1 microfocuser, polar alignment scope and four Plossls for only 449