I would like to order PSV-1 of Phatservers ( http://phatservers.com/virtual.html ) According to you 1000 GBs Transfer / 10 GBs Disk Space could fit to how many sites, how many content on the server and how many visitors each day? Thank you for your help!
Its all depends on what you serve through your website, For example . I might be serving HD videos is of 1GB, so i can do give only 1000Downloads a month to my visitors. on other hand I might have a simple blog with each page of 100kb, from which i can serve millions of pages. Try this bandwidth calculator: http://www.ibdhost.com/help/bandwidth/ It would surely give you a idea
judging by the prices they massively oversell, so be careful. I can bet that server will not hold a website massive enough for 1000 GB. I had the exact same surprise with my last host, but the specs looked a lot better. They were very concerned when I started to reach my bandwidth limit )