Hey, first of all Here is a cheaper, I know nothing about it but it appears to be the same, check it out with caution:
http://www.homier.com/itemdetail.asp?i=03988&c=11
-edit- the one at homier has a MT3 spindle and probabyl doesnt come with all the goodies.
What I have is:
http://www.homier.com/itemdetail.asp?i=03947&c=11 and its serving me well and undergoing a cnc conversion, I would be considering that one right now if I didnt put tons of time and money into this conversion.
Expect to spent over $500 on 'stuff' tools, metal, etc.
For materials like copper I suggest 2 flute CARBIDE end mills, they will last you at least 10X longer. I get all mine from jtsmachine.com
The circular vice your talking about I beleve would be a rotary table, they could be really handy Im sure, I havent personally used one and would like to get ahold of one sometime, Basicly you wont be able to make circular cuts without one without a cnc, but you can do angled cuts if you have a vice that allows that. Just think of how much you would actually use it, and if maybe you could do other things instead. Also you need to find a way to mount your peice being cut to it, and in the right spot.
Just remember, machining is addicting! I bought a mill, lived with it for a while, then started on the cnc conversion, bought a lathe and now buying a bandsaw probably tomorow..... just be careful
Jon