i know where to get 200 domain names at $6.75 each which is cheaper than your $7 that u posted. go here:
www.hostmywebsitenow.com
if u click on "domain names" then "bulk registration" u'll see if costs $6.75 each for 200
p.s:also on that site under "domain names" there is a feature called "backorder domains" which automatically monitors 95,000 domain names that are about to expire and alerts u so u don't have to even know what domain name u want.
hope this helps