Hi
My 2 cents...
Look at Andrews Com's site - $600 will get you a 10inch Dob, 4 or 5 Plossl
Eyepieces etc!!
The 8inch Skywatcher is going to be roughly the same telescope as the Guan Sheng one which Andrews sells for $399.
http://www.andrewscom.com.au/site-section-10.htm
Check out AOE too...
http://www.aoe.com.au/aoe.html
Sorry if I'm preaching to the converted, but in the past I bought a 10inch Dob from Bintel for $1099 almost 2 years ago. The exact same scope is now available for $599 but recently in Brisbane I've looked at the same scope for $995.
The moral - Buyer beware!!!!
These Chinese/Taiwan scopes are on sale all over the country under different names and inflated prices.
For me Andrews Com's looks the best buy at present - the 10 inch is a fantastic, manageable scope. Save some money for a UHC filter too
Good Luck
Cheers
Doug