mac pro... ready to pull the trigger on a used one...

http://cgi.ebay.com/ws/eBayISAPI.dl...8579856&_trkparms=tab=Watching#ht_1187wt_1082

I am thinking of buying this mac pro...

Can someone answer these questions about this computer?

How is the quality of ATI video card? How does the ATI card compare with the nvidia geoforce? Can i put in another ati card to run 3-4 monitors?
Can i set up those two hard drives into a raid-0 configuration easily?
Can i get applecare for this computer?


Is it okay to buy from this sort of seller?
And is it a fair price???


thanks!

r.

and this, compared to a new quad...

r...